Kevin Arlin

Los Angeles

I've recently finished my PhD at UCLA. I used to be named Kevin Carlson.

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What websites allow students to purchase solutions to problems?

cheating asked Jun 18, 2020 at 14:48

matheducators.stackexchange.com

20 votes

What's special about $C^\infty$ functions?

differential-geometry asked Oct 23, 2013 at 22:47

math.stackexchange.com

19 votes

What, exactly, is the fundamental group of a free loop space?

algebraic-topology homotopy-theory asked Jan 2, 2018 at 19:48

math.stackexchange.com

13 votes

Is $H^*(\mathbf{C} P^\infty)=R[X]$ or $R[[X]]$?

homotopy-theory cobordism asked Nov 2, 2014 at 22:39

math.stackexchange.com

13 votes

Cohomology of $S^2\times S^2/\mathbb{Z}_2$

algebraic-topology cohomology asked May 9, 2014 at 20:51

math.stackexchange.com

11 votes

What was Burroni's sketch for topological spaces?

reference-request ct.category-theory gn.general-topology accessible-categories asked Jul 26, 2017 at 20:35

mathoverflow.net

10 votes

Zeroth homology and cohomology of the rationals

homework algebraic-topology asked Sep 5, 2012 at 16:55

math.stackexchange.com

9 votes

Under what choice assumptions is there a monoid structure on every set?

category-theory axiom-of-choice monoid asked Jul 30, 2013 at 11:52

math.stackexchange.com

8 votes

$\mathbf{Q}[\sqrt 5+\sqrt[3] 2]=\mathbf{Q}[\sqrt 5,\sqrt[3] 2]$?

field-theory extension-field asked Sep 18, 2014 at 21:19

math.stackexchange.com

8 votes

Why do W (i.e., Withdrawn) grades exist?

united-states grading asked Mar 10, 2021 at 0:02

academia.stackexchange.com

Top Answers

101

Why is the number of ways of choosing $0$ items from $n$ items $1$?

math.stackexchange.com

Is linear algebra more “fully understood” than other maths disciplines?

math.stackexchange.com

What should I consider when deciding whether to delay an exam?

academia.stackexchange.com

How can I deal with a young software engineer who is otherwise bright but slacking and has behavioral issues?

workplace.stackexchange.com

What are the practical applications of the Taylor Series?

math.stackexchange.com

What is wrong with this proposed proof of the twin prime conjecture?

math.stackexchange.com

Would it be frowned upon for a person to hold two full time online teaching positions?

academia.stackexchange.com

What's so special about the group axioms?

math.stackexchange.com

Thoughts on if it's possible to succeed in math @ PhD level w/o natural ability in quant reasoning?

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Non-closed subspace of a Banach space

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Getting Students to Not Fear Confusion

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Why can't differentiability be generalized as nicely as continuity?

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Why is a function space considered to be a "vector" space when its elements are not vectors?

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Should a ring be closed under multiplication?

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Why homology with coefficients?

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Why did Serre choose coherent sheaves?

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A non-Hausdorff space with a Hausdorff subspace

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Why does linear dependence require a *finite* linear combination to vanish?

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How to find the degree of a field extension

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I did absolutely nothing during COVID, how to catch up?

academia.stackexchange.com

How do I show language of prime number of xs not context-free?

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Difference between "space" and "mathematical structure"?

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What is an integer?

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What's special about $C^\infty$ functions?

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Function "evaluation" just means "composition"?

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Motivation for introducing algebraic topology?

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what is an ∞-group?

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Is there a way to determine how many digits a power of 2 will contain?

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The $2$-category of monoids

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Some possible mistakes in Bott and Tu

math.stackexchange.com