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Apr
17
revised A question on Hawaiian earring
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Apr
16
revised A question on Hawaiian earring
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Apr
16
comment A question on Hawaiian earring
I think the idea of 'reduced form' does not work for $\langle f\rangle$. I think you are viewing $\langle f\rangle$ as $\langle [f_1,f_2]\rangle \langle [f_3,f_4]\rangle\cdots$, but this product does not make sense in a group (infinite product of group elements!)
Apr
16
comment A question on Hawaiian earring
So, you claim that if you have two loops, one passing through origin infinitely often and the another one passing through origin only finitely often can not be homotopic, how do you prove that?
Apr
16
revised A question on Hawaiian earring
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Apr
16
asked A question on Hawaiian earring
Mar
12
comment lim sup of sequence of continuous function from $[0,1]\rightarrow [0,1]$
@LucM: You are right, thanks. Corrected.
Mar
12
revised lim sup of sequence of continuous function from $[0,1]\rightarrow [0,1]$
edited body
Jan
1
comment Prove that the real root of $x^3 + x + 1$ is irrational
@Beginner: I think it depends on the reviewer/examiner of your proof. If the reviewer is willing to accept the 'Rational Root Theorem' as a standard result (i.e. allow you to use the Theorem) then your proof is fine. Otherwise, you have to provide a proof (not just a link) of the Theorem.
Jan
1
comment Prove that the real root of $x^3 + x + 1$ is irrational
@Beginner: I have added the explanation in the answer.
Jan
1
revised Prove that the real root of $x^3 + x + 1$ is irrational
added 92 characters in body
Jan
1
comment Prove that the real root of $x^3 + x + 1$ is irrational
@Beginner: Note that $p\mid a^3$ and $p\mid ab^2$. Then $p\mid (a^3+ab^2)=-b^3$ and hence $p\mid b$.
Jan
1
answered Prove that the real root of $x^3 + x + 1$ is irrational
Jan
1
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Dec
29
answered Continuous Extension of Maps
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Jun
14
comment Integer Triangles with Perimeter $n$
@Ozera: I have completed the answer, have a look.