Talk:Integrally closed
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There is another definition of integral closure in algebraic number theory.
And in algebraic geometry/commutative algebra. I am adding that one.
The definition for ordered groups is unclear. What is written can be interpretted as: "for all a and b in G, and all natural n, (if a^n < b then a < 1 )"
I think what is intended is: "for all a and b in G, ( if for all natural n (a^n < b) then a < 1 )"
Someone should look into this.