Erno Nemecsek

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	1,921 reputation	bio	website		visits	member for	1 year, 10 months
627 badges		location			seen	15 hours ago

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May 8	accepted	Integral closure $\tilde{A}$ is flat over $A$, then $A$ is integrally closed
May 8	awarded	Caucus
May 8	asked	Integral closure $\tilde{A}$ is flat over $A$, then $A$ is integrally closed
Mar 8	accepted	Space of homeomorphisms Homeo$(S^1)$ of $S^1$ deformation retracts onto $O(2)$
Mar 8	comment	Space of homeomorphisms Homeo$(S^1)$ of $S^1$ deformation retracts onto $O(2)$ Great answer, thank you!
Mar 7	awarded	Nice Question
Mar 7	comment	Proving Fermat's Last Theorem (easily) using “assumed” conjectures If abc conjecture implies Fermat's Last Theorem, then equivalent statements imply as well. See the list on Wikipedia: en.wikipedia.org/wiki/Abc_conjecture#Some_consequences
Mar 5	revised	Seeking a layman's guide to Measure Theory added 1 characters in body
Mar 5	revised	A good quick introduction to Knot Theory? deleted 18 characters in body
Mar 4	comment	Space of homeomorphisms Homeo$(S^1)$ of $S^1$ deformation retracts onto $O(2)$ @StefanH. I edited the post to answer your question. Thanks!
Mar 4	revised	Space of homeomorphisms Homeo$(S^1)$ of $S^1$ deformation retracts onto $O(2)$ added 622 characters in body
Mar 4	revised	Space of homeomorphisms Homeo$(S^1)$ of $S^1$ deformation retracts onto $O(2)$ edited title
Mar 4	revised	Space of homeomorphisms Homeo$(S^1)$ of $S^1$ deformation retracts onto $O(2)$ added 58 characters in body
Mar 4	asked	Space of homeomorphisms Homeo$(S^1)$ of $S^1$ deformation retracts onto $O(2)$
Mar 1	comment	Am I getting the definition of these topological concepts right? Besides, in my opinion, it is better to use a textbook definition rather than describing things. But if you want to get the intuition, you can work on the examples.
Mar 1	comment	Am I getting the definition of these topological concepts right? You got the idea but you don't always have a topology that is induced by a metric. So you cannot talk about "epsilon balls".
Feb 2	awarded	Custodian
Feb 2	reviewed	Satisfactory Find the coordinates of a point on a circle
Jan 26	accepted	$f \in L^1 (\mathbf{R}) \iff\mathop{\lim_{a \to -\infty}}_{ b \to +\infty} \int_a^b \|f(x)\| \mathrm{d} x \text{ exists and it is finite}$
Jan 26	answered	A good quick introduction to Knot Theory?