User talk:Tomruen

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Hi there. Welcome to Wikipedia! You've done some good work here. I hope you like it here and stick around. If you want, you can drop us a note at Wikipedia:New user log to introduce yourself.

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Happy editing, Isomorphic 06:08, 4 May 2004 (UTC)

Since you're interested in tree species, you might want to check out WikiProject Tree of Life. At the bottom of that page, there's a list of some contributors to the species articles. Those are probably good people to go to if you have questions about adding new species, or if you want comments on something. Similarly, if you've got any questions about how we do math and CS here, you can check out WikiProject Mathematics or Wikipedia:WikiProject Computing, respectively.

Contents 1 Exact trigonometric constants 2 Penrose Tiling 3 Featured Picture nomination 4 Polyhedron images 5 Minneapolis meetup 6 Lunar libration image 7 Small rhombitrihexagonal tiling 8 DYK 9 Pic of the Day 10 Category:Uniform prismatoid polyhedra 11 Polyhedra 12 Image copyright problem with Image:Lunar-libration.gif 13 Howdy 14 Grand antiprism 15 test math 16 Need vertical symbol like { } without () 17 Pentagonal_prism 18 Mars photos 19 Compass and straightedge 20 Wikipedia:WikiProject Mathematics/Graphics 21 Cubohemioctahedron 22 Image:Atmospheric CO2 with glaciers cycles.gif 23 Saros 131 24 Talk pages 25 Truncation (geometry) 26 Bowers style acronym 27 Image tagging for Image:Pentagram interior.gif 28 Edge-uniform 29 Uniform tiling images 30 Uniform polychora references 31 Barnstar 32 Photo contribution 33 Compound of Cube and octahedron 34 Polyhedra 35 Question about moon calendary at Lunar phase 36 Disphenoid 37 {{primarysources}} 38 Request for edit summary 39 Honeycomb images 40 POTY 2006 41 Libration 42 POTY 2006 - Final 43 Polytope VEFC data? 44 Coxeter-Dynkin diagrams 45 Penteractic pentacomb

[edit] Exact trigonometric constants

I am looking forward to spending some time this page, checking values and reformatting as Tex math.

MathMan64 4 July 2005 00:43 (UTC)

• Tom Ruen 06:54, August 30, 2005 (UTC) Appreciated in both respects! (verification and formatting)

[edit] Penrose Tiling

Hi. I plan to put this on WikiMedia COMMONS Image:Penrose7.gif unless you want to do it! I will add it to the Category "Tessellations" if that make sense. LoopZilla 10:09:31, 2005-07-28 (UTC)

• Tom Ruen 06:55, August 30, 2005 (UTC) Unsure what this means (COMMONS), but do as you wish!

[edit] Featured Picture nomination

Hi Tom,

I've nominated your great animation "Moonc.gif" (at Libration) as a Featured Picture. It truly completes that article and highlights a very interesting phenomenon. Bravo, and good luck! CapeCodEph 17:21, 25 August 2005 (UTC)

• Thanks! Tom Ruen 06:55, August 30, 2005 (UTC)

Tom, I love the animation, but I'd just like to know why on August 30 you reverted the image back to the original. I thought that it was agreed that the version without the crosshair, border and text was better? I know this is your image, were you not happy with the change? A little explanation would probably be appreciated. Raven4x4x 00:34, September 4, 2005 (UTC)

• Raven4x4x - I'm really sorry - totally unintentional. I wouldn't not have believed I was responsible except it clearly says so. Must have pressed something wrong. Tom Ruen 21:46, September 6, 2005 (UTC)

Your Featured picture candidate has been promoted Your nomination for featured picture status, Image:Lunar_libration_with_phase2.gif, gained a consensus of support, and has been promoted. If you would like to nominate another image, please do so at Wikipedia:Featured picture candidates. ~~~~

Weee! Congrats, Tom!

[edit] Polyhedron images

As far as I can tell unless someone else somehow swapped the files, Image:Disdyakisdodecahedron.jpg (reference: Mathworld, Pretty page) and Image:Disdyakistriacontahedron.jpg (reference: Mathworld, Pretty page) are not mislabelled. Κσυπ Cyp   19:02, 13 September 2005 (UTC)

The archimedean solid and catalan solid articles mention the alternate names, and so do the references. I agree that the names are weird, but I didn't name them. Κσυπ Cyp   06:05, 14 September 2005 (UTC)

[edit] Minneapolis meetup

Hello Tom. I'm contacting you since you are listed at Wikipedia:Wikipedians/Minnesota. I'm going to be at a conference in Minneapolis and am planning a Wikipedia meetup for October 8. If you are near Minneapolis at that time, please see Wikipedia:Meetup/Minneapolis. Angela. 20:45, 3 October 2005 (UTC)

[edit] Lunar libration image

Wow. --P3d0 16:39, 8 October 2005 (UTC)

[edit] Small rhombitrihexagonal tiling

Excellent work. freestylefrappe 20:36, 8 October 2005 (UTC)

[edit] DYK

Did you know? has been updated. A fact from the article List of uniform polyhedra, which you recently created, has been featured in that section on the Main Page. If you know of another interesting fact from a recently created article, then please suggest it on the "Did you know?" talk page.

I've made the correction, thanks.--nixie 00:00, 10 October 2005 (UTC)

[edit] Pic of the Day

Hi Tom,

Just to let you know that your animation Image:Lunar libration with phase2.gif is due to be the Pic of the Day on the 10th November. If you get a chance, you can check and correct the caption at Wikipedia:Picture of the day/November 10, 2005. -- Solipsist 16:18, 4 November 2005 (UTC)

[edit] Category:Uniform prismatoid polyhedra

Hi. I was going through the list of orphaned categories and found your Category:Uniform prismatoid polyhedra. With my piddly Math B.S. and little knowledge in this area, this looks like a viable category to me so I gave it appropriate-looking parent categories and then added Octagonal prism to the category (and removed it from the less-specific categories it was already in). Do those two changes seem like appropriate things to do? If so, you might want to continue populating it as I did with Octagonal prism before the category gets tagged as underpopulated and deleted.  :) wknight94 19:15, 19 December 2005 (UTC)

Hi Wknight94. Thanks for the note. I made the category a while ago trying to organize the polyhedra articles. I then replaced usage with the obvious more general one (prismatoid polyhedra) since there's some Johnson solids (Like square pyramid) which are Prismoidal but not uniform. I don't know if there's any value is a category that combines two categories, but assumed not. I marked the category for deletion and moved Octagonal prism back. Maybe this is useful, but seemed seemed not since each article can have multiple categories. Tom Ruen 20:31, 19 December 2005 (UTC)

Suit yourself. It's not uncommon to see one category that is a combination of two other categories and serves as a nice grouping of articles that are the intersection of the two. In fact, that's an especially good usage of categories — but if you don't feel it's of any value in this case... Personally, I wouldn't know. wknight94 21:40, 19 December 2005 (UTC)

[edit] Polyhedra

Yes I'm not sure what to do with the uniform polyhedra. I thought we could do the categories as all uniform=Platonic solids + Kepler solids + Archimedean solids + the remained in Uniform polyhedra. This would leave plenty of space for the 53 non-convex polyhedra. However only one of these has an article. I may well put the category back again. --Pfafrich 00:08, 12 January 2006 (UTC)

Must leave ASAP... Simple answer NO. If you'd like to ADD Category:Nonconvex unform polyhedra, that's fine, but uniform is ALL of them. Tom Ruen 00:13, 12 January 2006 (UTC)

OK so I can't spell, sorry! --Pfafrich 02:41, 14 January 2006 (UTC)

Tom your supposed to be on a wiki break! get back to your revison ;-). --Salix alba (talk) 10:07, 30 January 2006 (UTC)

Thanks for noticing my poor follow-through. AND Sunday I even wrote a program to read VRML files and generate a list of vertex figure counts for all the Johnson solids, but fortunately no wikiedits yet, considering an article List of Polyhedra by vertex figures of something like that, since it is an interesting question that comes out of the near-miss Johnson solids. Tom Ruen 21:34, 30 January 2006 (UTC)

In which case see User:Pfafrich/test I've managed to sort out a way of doing a database of info combined with a template to show uniform polyhedra in a fairly nice ordering based round wythoff symbol. --Salix alba (talk) 21:55, 30 January 2006 (UTC)

[edit] Image copyright problem with Image:Lunar-libration.gif

Thanks for uploading Image:Lunar-libration.gif. However, the image may soon be deleted unless we can determine the copyright holder and copyright status. The Wikimedia Foundation is very careful about the images included in Wikipedia because of copyright law (see Wikipedia's Copyright policy).

The copyright holder is usually the creator, the creator's employer, or the last person who was transferred ownership rights. Copyright information on images is signified using copyright templates. The three basic license types on Wikipedia are open content, public domain, and fair use. Find the appropriate template in Wikipedia:Image copyright tags and place it on the image page like this: {{TemplateName}}.

Please signify the copyright information on any other images you have uploaded or will upload. Remember that images without this important information can be deleted by an administrator. If you have any questions, feel free to contact Carnildo or ask for help at Wikipedia talk:Image copyright tags. Thank you.

Please delete - see talk on image. Tom Ruen 07:07, 29 January 2006 (UTC)

[edit] Howdy

I see you're on a wikivacation, but if you return you may be interested in assiting in an article titled Glacial retreat. We will need to tie in information of carbon dioxide gases and the effects of global warming as it pertains to the massive glaicial recession over the last 150 years. The article is only a month or so old and has many fine links and images and I noticed some of your graph work...anyway, if you're interested, please join in.--MONGO 08:59, 5 February 2006 (UTC)

[edit] Grand antiprism

Hi, I just wanted to express my (very belated) appreciation for your making a picture of the vertex figure of the grand antiprism. Every bit helps!—Tetracube 01:56, 16 February 2006 (UTC)

[edit] test math

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[edit] Need vertical symbol like { } without ()

Can Wiki reproduce this?

Best I could find is this:

• { }

Obviously I'd like to insert numbers for p and q as well!

Any help is appreciated. I could find ANY help on "math" codes besides examples in existing articles.

Tom Ruen 09:19, 4 March 2006 (UTC)

Wikipedia:Manual of Style (mathematics)#Typesetting of mathematical formulas is a good place to start.

It has links to various resources including Help:Formula which has

\begin{Bmatrix} x & y \\ z & v \end{Bmatrix} inside math tags

for

So, your example would give --Cavrdg 10:11, 4 March 2006 (UTC)

Wonderful! Thanks! Tom Ruen 11:31, 4 March 2006 (UTC)

The \left\{ and \right\} notation is an alternative way to do this, and a bit more flexable

\left\{\sum_1^n\begin{pmatrix} x \\ y \end{pmatrix}\right\}

gives

--Salix alba (talk) 10:19, 5 March 2006 (UTC)

[edit] Pentagonal_prism

Hello there. Well, i acctualy didn't 'move' the image, cause i can't do that. I save on my disk, and repost on wiki commons. Some admin might thought that images were the same so one could be removed. I think GFDL-en doesn't ontradict or override, and thats why it goes down, because the credit/author autorization must be follow to then follow the GFDL. At least thats how i understud, but if you want to change the order, do it :) I am not really sure about all this stuff, but since no one complaint about i let be that way. At the commons only Free use image are accepted. --R2cyberpunk 15:04, 9 March 2006 (UTC)

[edit] Mars photos

I would just like to clarify that I don't believe that the images on Mars photos should be removed, but just the image gallery page. Wikicommons would be a good place for these, and the image description page can keep the material you moved there, I think. Rmhermen 22:53, 16 March 2006 (UTC)

Hi! I just figured it was safest to remove and just link to my user page until I found some better place for it. I created the mars photos page originally and of course neglected it. I've got another set of images for a 2005 mars animation, much better, but not done yet so anyway, I'll just keep it linked on my page for now. Tom Ruen 23:05, 16 March 2006 (UTC)

[edit] Compass and straightedge

I'd appreciate your comment on Talk:Compass and straightedge. Thank you. John Reid 23:51, 28 March 2006 (UTC)

[edit] Wikipedia:WikiProject Mathematics/Graphics

Hi Tom, though you might be interested in Wikipedia:WikiProject Mathematics/Graphics which has just been created. --Salix alba (talk) 11:39, 14 April 2006 (UTC)

[edit] Cubohemioctahedron

Tom, first thanks for all your work on the polyhedra:good stuff! Could you take a look at my comments at Talk:Cubohemioctahedron - I think there is a problem in the diagram. Regards Cje 08:16, 17 April 2006 (UTC)

[edit] Image:Atmospheric CO2 with glaciers cycles.gif

I copied your Image:Atmospheric CO2 with glaciers cycles.gif to the Commons commons:Image:Atmospheric CO2 with glaciers cycles.gif, because I intend to use it in the german wikipedia. The version Image:Atmospheric CO2 with glaciers cycles.gif could be deleted (but I shall not suggest it myself for deletion), because if an image does not exist on the english wikipedia, the software looks automatically for it on the commons.

Please consider uploading future images to the commons (commons:Special:Upload) instead of the english wikipedia, as the image can then be directly used in other wikipedia projects. --Neumeier 12:42, 6 May 2006 (UTC)

Hi, I don't understand fully. The existing gif image is used on the page Timeline of glaciation. I don't know how to link images from commons into wikipedia. Tom Ruen 07:16, 8 May 2006 (UTC)

[edit] Saros 131

I see that you just tagged Saros 131 for speedy deletion, as its content had been merged into Saros cycle. For GFDL reasons, we have to ensure that the history of every article remains intact, so unless you have any objection, I'm going to merge the history of that article into Saros cycle. Please respond here or on my talk page. Thanks. AmiDaniel (talk) 06:45, 1 June 2006 (UTC)

Sure merge the history as you like. Tom Ruen

[edit] Talk pages

I'm sure you are already aware, but just so that you don't take my revert of your removal of your comments from Talk:Moon the wrong way, generally it's frowned upon to remove something from talk pages unless it's inappropriate in some other way, as the talk page can provide a great record of why certain changes were done, etc. Anyway, nothing personal. Peyna 01:53, 28 June 2006 (UTC)

Hi, I see both sides - a quick misunderstanding cleared up seems a distracting record to log forever, and talk pages themselves have a history, so it seemed harmless. An clearner alternative could have been writing to the user's talk page that reverted my changes accidentally, and then he could decide to clean his own talk page. Anyway, I understand your view. Thanks! Tom Ruen 05:45, 28 June 2006 (UTC)

[edit] Truncation (geometry)

		The Original Barnstar
		This barnstar is awarded to TomRuen for creating the excellent Truncation (geometry) page.—Tetracube 15:42, 11 July 2006 (UTC)

Hi Tetracube. Thanks! I appreciate the recognition. Of course always room for improvement all around.

I'm sure you've also seen: Snub (geometry), Rectification (geometry) and Dual polyhedron.

In fact, I haven't seen these until you pointed them out. I've been away from wikipedia for a while and have just returned a few days ago, and I see that much has taken place while I was away.—Tetracube 01:53, 14 July 2006 (UTC)

And uniform polyhedron operation summary at: Uniform_polyhedron#Listed_by_symmetry_groups_and_vertex_arrangements

Someday we need to get some articles on other operations: Runcination (geometry) and Omnitruncation (geometry), and all the others for the uniform polychoron.

And most fun are the relational diagrams and tables at:

Schläfli symbol#Extended Schläfli symbols for polyhedra and tilings

And

Schläfli symbol#Extended for uniform polychora and 3-space honeycombs

I can't well "picture" word definitions, so pictures are my only hope at connecting these operations.

Any help to better organize and expand is appreciated, and my time is limited now for big additions.

If I had time, a next project would be to generate a summary diagram like Image:Polyhedron_kaleidoscope_triangles2.png for polychora/honeycombs domains like Image:Polychoron tetrahedral domain.png.

Tom Ruen 22:34, 12 July 2006 (UTC)

Well, the one thing that impressed me the most is the use of images to illustrate the concepts. Sometimes geometry is best explained by pictures rather than words. Now, if only I had the time/persistence to write a 4D polytope generator/renderer, I'd produce images for the uniform polychora. I'm personally a big fan of projections as the best way to visualize higher-dimensional space; the current wire diagrams are better than nothing, but they fail to convey what I see in my mind's eye when pondering these objects. What I really want is to render them using polygons in PovRay, and probably animate them (4D projections have a tendency to create illusions when viewed from a static angle).—Tetracube 01:53, 14 July 2006 (UTC)

[edit] Bowers style acronym

Hi Tom,

Just though you might like to know the Bowers style acronym was prodded today. I've removed the prod, but it might help if you give your thoughts on the talk page. I suspect there might be a few AfD's soon, relating to the Bowers pages, so any help in establising notability is apreciated. --Salix alba (talk) 16:53, 14 July 2006 (UTC)

Its happened. see Wikipedia:Articles for deletion/Bowers style acronym, Wikipedia:Articles for deletion/Jonathan Bowers. --Salix alba (talk) 18:59, 14 July 2006 (UTC)

Sorry.... Tom Ruen 05:03, 20 July 2006 (UTC)

[edit] Image tagging for Image:Pentagram interior.gif

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[edit] Edge-uniform

Tom, maybe you can help clear something up for me. I've been fiddling with the polyhedra articles and added face-, vertex- and edge-uniform articles since they seemed to be referenced alot and I could only find the definitions buried in the Polyhedron article. I'm having trouble with the edge-uniform article. I simplified the definition to read "all edges have the same length". I hope that was essentially correct. But I also copied in a bit from the rhombic triacontahedron article that stated there were only nine convex, edge-uniform polyhedra. On further consideration that seems incorrect. There are nine (I think) convex deltahedra -- not the same as the list of convex, edge-uniform polyhedra. If I'm not mistaken the deltahedra are all edge-uniform. So something is amiss either with my definition or the claim about the convex, edge-uniform set. Can you shed any light? andersonpd 05:37, 7 August 2006 (UTC)

Hi Paul. I saw your new articles, links I've long neglected. Thanks, a good start. I've been afraid of defining them myself.

Something in the definition is needed like vertex-uniform, vertex-uniform means that for any two vertices there exists a symmetry of the polyhedron mapping the first isometrically onto the second.

The deltahedra would fail because there's different sorts of edges, different dihedral angles in the least.

Your offered definition, as equal length is merely equilateral.

In the rhombic triacontahedron you can see two types of vertices, and each edge has one of each. That's what it is saying at least.

Maybe best to abandon edge-uniform unless we can get a clear definition?

Quasiregular seems very related here as well, which isn't exactly defined. I would say quasiregular is a subcategory to semiregular, but implied exclusiveness in the polyhedron article as written.

Sorry I can't help more now. Tom Ruen 06:36, 7 August 2006 (UTC)

The whole terminology may be nonstandard. Here's some comparable terminology from Tilings and Patterns:

Uniform for vertex-uniform

Vertex-regular for face-uniform

And book Polyhedra, Peter Cromwell (p.391)

Quasiregular is all 4 cuboctahedron, icosadodecahedron, and their duals (Also all are edge-transitive, but only first two are face-transitive)

Vertex-transitive for vertex-uniform

MathWorld defs:

[1] [2]

Best I can find for now!

Tom Ruen 06:51, 7 August 2006 (UTC)

[edit] Uniform tiling images

Hi, I appreciate the SVG replacements for my GIF tiling images. I'm not sure how you do the conversion.

Erm... manually? I do most of my SVG coding by hand, but Inkscape or Sodipodi could help a lot. You would still have to redraw the polygons by hand, though. --Fibonacci 06:53, 7 August 2006 (UTC)

I'm interested in showing the 32 uniform colorings for the 11 uniform tilings, and don't want to keep uploading inferior images. I'm wondering if you could help?

Sure. I'll start classes tomorrow so I'll probably be a bit busy, but sure I can help. --Fibonacci 06:53, 7 August 2006 (UTC)

I uploaded temporary image from a book, showing he 32 patterns: Image:Uniform_tile_colorings_draft.png Tom Ruen 01:26, 7 August 2006 (UTC)

Downloaded. But could you please explain me a bit about those colourings? I don't think the image is clear enough by itself. --Fibonacci 06:53, 7 August 2006 (UTC)

Thanks! The colors are unimportant. The pictures are grayscale, so a bit hard to see some maybe. The label shows a code, like 121212 means alternating two colors at a vertex. Or 1111 means one color, and 1234 mean four different colors around a vertex. Does that help? Tom Ruen 07:11, 7 August 2006 (UTC)

I think I do understand. You want me to do an image like this, only with all the possible colourings? --Fibonacci 03:30, 9 August 2006 (UTC)

Wonderful! Hopefully you can keep black lines on all tilings.

If you want to pick a color set for uniform tilings, might make sense to match those used in the uniform polyhedron set: (1) Red, (2) Yellow, (3) Blue, (4) Green, (5) ???

For file names, you can pick what you like, but maybe something like Image:tile_4444_color1112.svg? (Alternately you could merge the sets by tiling type, like your example, and say Image:tile_4444_colorings.svg? If you merged, them then maybe they should be each labeled below: (a) 1111 (b) 1112 (c) 1212 .... so they could be referenced individually.)

Well, just quick thoughts. Thanks! Tom Ruen 03:41, 9 August 2006 (UTC)

Last thought, might be good to include the two nonuniform colorings I crossed out?

[edit] Uniform polychora references

Hi Tom, I'm sure you have Talk:Uniform polychoron on your watchlist already, but I thought I'd just drop a note to say that I've finally found some references (in academic journals) for at least the convex uniform polychora. I've posted the references on the talk page. I suppose we should actually retrieve a copy of these articles (or have someone do it) before we actually add the references to the article.—Tetracube 06:15, 9 August 2006 (UTC)

[edit] Barnstar

		The E=MC² Barnstar
		This barnstar is awarded to you for outstanding work on astronomy- and geometry-related articles. Gray Porpoise 20:40, 11 August 2006 (UTC)

[edit] Photo contribution

I like your picture of Lake Avenue in Duluth, Minnesota. But I think it could be improved by rotating it about 1.4 degrees clockwise. If you don't have a program to do so, I could rotate it for you. Thanks. Appraiser 17:01, 26 October 2006 (UTC)

I can rotate also, but limited time, so happy if you want to! Tom Ruen 22:12, 26 October 2006 (UTC)

[edit] Compound of Cube and octahedron

I've added the "{{prod}}" template to the article Compound of cube and octahedron, suggesting that it be deleted according to the proposed deletion process. All contributions are appreciated, but I don't believe it satisfies Wikipedia's criteria for inclusion, and I've explained why in the deletion notice (see also Wikipedia:What Wikipedia is not and Wikipedia:Notability). Please either work to improve the article if the topic is worthy of inclusion in Wikipedia, or, if you disagree with the notice, discuss the issues at Talk:Compound of cube and octahedron. You may remove the {{dated prod}} template, and the article will not be deleted, but note that it may still be sent to Wikipedia:Articles for deletion, where it may be deleted if consensus to delete is reached. -- THL^CCD 05:21, 19 November 2006 (UTC).

[edit] Polyhedra

Uhh..... What's going on over at {{Semireg polyhedra db}}? There's no documentation that I can find, and the template is incomprehensible, so I'm asking you because you created it. How am I supposed to edit the infobox? How is anyone supposed to? Why does this template exist instead of using a regular infobox? — Omegatron 06:03, 23 November 2006 (UTC)

Quick answer in User:Tomruen/polyhedron_db_testing. Another guy started setup the template system. Main idea for it is the same data can be displayed in different info boxes. Obviously harder to read and edit, and yes no notes besides what you can find from this user page. Sorry. Tom Ruen 07:10, 23 November 2006 (UTC)

[edit] Question about moon calendary at Lunar phase

Hi. In the caption of your Moon calendar, found at lunar phase, it says that the images are taken 25 minutes later each day. Could you explain why? The article says you should do this about 50 minutes later each day, though there is some confusion on the discussion page as to the exact value. Thanks for looking into this. Lunokhod 09:41, 4 December 2006 (UTC)

It was done actually to reproduce observable phases. A new crescent is only visible at sunset. An old crescent is only visible at sunrise. So I calculated a period that moved smoothly between these two observable limits. If I had picked the moon's actual period (50 minute shift), like say when the moon is always at zenith, the moon would have to be seen in the daytime for the crescent phases. Here's a link to some actual photos I tried for the same effect, minus cloudy days of course: [3] Tom Ruen 21:51, 4 December 2006 (UTC)

[edit] Disphenoid

Thanks for adding the picture to the disphenoid article. -- Dominus 12:02, 18 December 2006 (UTC)

[edit] {{primarysources}}

A lot of articles containing just a primary source usually serve to promote the article in a biased manner. Criticisms for example are rarely (if ever) included if the only source provided is the subject's own website. It's a good thing to aim for external sources from as many external (reliable) sources as we can muster to give articles some balance. Newspapers may very well be a good source of information where online content is lacking. All too often we easily fall into the trap of "if it aint found at Google, it doesn't exist". Hope this help to explain my usage of the {{primarysources}} template. -- Longhair\^talk 04:25, 27 December 2006 (UTC)

[edit] Request for edit summary

When editing an article on Wikipedia there is a small field labeled "Edit summary" under the main edit-box. It looks like this:

The text written here will appear on the Recent changes page, in the page revision history, on the diff page, and in the watchlists of users who are watching that article. See m:Help:Edit summary for full information on this feature.

Filling in the edit summary field greatly helps your fellow contributors in understanding what you changed, so please always fill in the edit summary field, especially for big edits or when you are making subtle but important changes, like changing dates or numbers. Thank you. – Oleg Alexandrov (talk) 04:23, 12 January 2007 (UTC)

Sorry, I get lazy. I'll try to do better. Tom Ruen 04:24, 12 January 2007 (UTC)

[edit] Honeycomb images

Hi great Tom! I try to make a tessellation image for the dual of Cantitruncated cubic honeycomb, but you must sketch the wikipedia article. -- Rocchini 26 January 2007

Hi Rocchini. Thanks. I don't know what to call it yet, so I linked an image at the article. Also helpful for Omnitruncated cubic honeycomb. Tom Ruen 09:43, 25 January 2007 (UTC)

• Cantitruncated cubic honeycomb
  • Image:Dual cantitruncated cubic honeycomb.png
• Omnitruncated cubic honeycomb
  • Image:Dual omnitruncated cubic honeycomb.png

for a moment I have made the common image Order3_heptakis_heptagonal_til.png ,

but I not undestand how to insert in the List_of_uniform_planar_tilings#Uniform_tilings_in_hyperbolic_plane page. Because in the original tilining the color is per face, in the dual tiling I have colored the surface per vertex. —The preceding unsigned comment was added by Rocchini (talk • contribs) 14:22, 7 February 2007 (UTC).

Thanks Rocchini! Sorry on the template confusion. The source (database) is at: Template:Uniform_hyperbolic_tiles_db. I added it for your example. I don't mind how it is colored, although best to have a full set of vertex-colorings if you could repeat them all that way. Thanks again! (I also linked image at Triangular_tiling) Tom Ruen 21:06, 7 February 2007 (UTC)

[edit] POTY 2006

The arrangements for the Commons Picture of the Year 2006 competition are now complete, and voting will start tomorrow, Feb 1st. All the featured pictures promoted last year are automatically nominated. As the creator of one or more images nominated for the election we invite you to participate in the event. Alvesgaspar 10:25, 31 January 2007 (UTC)

[edit] Libration

Salut!

Can you make commons:Image:Lunar libration with phase2.gif version without shadow - nur libration? And without word "Date". Maksim-e 18:15, 18 February 2007 (UTC)

Sure. Do you want the same month, or different one? Tom Ruen 00:19, 19 February 2007 (UTC)

ALSO: A no-shadow example is at [4]

Okay, new animation for April 2007 on commons Image:Lunation animation April 2007.gif. I picked 60 frames, starting and ending at apogee where animation would transition would be smoothest. Tom Ruen 02:05, 19 February 2007 (UTC)

Thank you! Maksim-e 10:46, 19 February 2007 (UTC)

[edit] POTY 2006 - Final

Your image has been chosen as one of the 11 finalists of the POTY 2006 competition. Congratulations! Please check Commons:Picture of the Year/2006 - Alvesgaspar 00:38, 21 February 2007 (UTC)

[edit] Polytope VEFC data?

Hi, I'm just wondering if next to your VEF data for various polytopes you happen to also have data that includes cells? I'm interested in rendering polychora with back-face culling, which requires facet normals (which needs to know which facets belong to which cells, etc.). Thanks.—Tetracube 05:41, 23 February 2007 (UTC)

• Alas, so far my program only generates vef data. It builds polytopes by a vertex figure and reflection, so only initially knows vertices and edges. I added faces partly just to count them. I can equally add cells, but haven't, and not committed to getting it soon. I suppose a dumb approach would be to take VEF data compute cell center points, and then build face lists for each cell.
• On a different direction, I just purchased Stella4D beta D as a generator for polychora, and played a bit tonight. It has some limitations too - mainly doesn't seem to recognize symmetries to color cells as I want. I'm also asking if it has or will have an export/import 4D option. It definitely has cell data, but only a 3D export that I could see.
• I'll tell you if I get anything useful. Tom Ruen 07:20, 23 February 2007 (UTC)

[edit] Coxeter-Dynkin diagrams

Do you think that Talk:Coxeter-Dynkin diagram could do with SVGification? If so, I'll do it once I get a free couple of days. Stannered 15:33, 4 March 2007 (UTC)

Hi Stannered! I'm pretty satisified. I've got mixed feelings. As symbols I don't think they need to be perfect, even printing seems fine to me as-is, and there can be artifacts or fuzziness on rescaling. I like CRISP white/black boundaries. I'm open for experimentation to see what the result might look like. Tom Ruen 06:39, 5 March 2007 (UTC)

Another issue, the symbols are variable width, but constant height, so to line-up they'd have to have the correct height, but Wiki scales images by width, so it would seem a pain to have to guess how to scale them. Basically they'd still have to work with a default size that is consistent. Just a thought. Tom Ruen 07:26, 5 March 2007 (UTC)

Even SVG images have a default pixel height embedded in them. I'd just make that the same as the current images. I'll do a couple at some point over the next few days and post them up, see what you think. Stannered 10:19, 5 March 2007 (UTC)

Tom, what font did you use on the non-fractional ones? It should be obvious, but I'm having a brain freeze... Cheers, Stannered 15:11, 5 March 2007 (UTC)

Sounds good. Arial font from MSPaint. I actually made them big first and resized them smaller to fit the symbol. Tom Ruen 22:51, 5 March 2007 (UTC)

I finally tried printing, nice 1200dpi printer, and really svg images don't look better than the pixel ones. Is there any way to disable grayscale/antialiasing for svg conversion to png? Tom Ruen 07:30, 15 March 2007 (UTC)

Something like any good? Stannered 10:57, 6 March 2007 (UTC)

Compared to:

Looks nice. I'm not sure what the advantage is. Main disadvantage is that the symbols are still somewhat of a work in progress, and I can't make my own svg files if want to try something different. I guess I should try a hard copy too and see how it looks, probably does look better with gray scale edges. Tom Ruen 22:06, 6 March 2007 (UTC)

[edit] Penteractic pentacomb

Hi, Tom.

I ran across this while reviewing new math articles. The title of the page is penteractic pentacomb, but the article begins "The penteractic tetracomb …". I'm not big on solid geometry in five dimensions, so I'm not sure if the title is off, or if the lead sentence is. Anyway, it's confusing. Thanks! DavidCBryant 11:24, 17 March 2007 (UTC)