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Jay Kangel

I have a BA in math from the University of Minnesota. I am interested in convexity.
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28
How can I prove that one of $n$, $n+2$, and $n+4$ must be divisible by three, for any $n\in\mathbb{N}$
math.stackexchange.com

15
Is there any conjecture that has been proved to be solvable/provable but whose direct solution/proof is not yet known?
math.stackexchange.com

10
Complete lattices and sublattices – which requirement is more stringent?
math.stackexchange.com

9
Showing that a set X with a trivial topology is not metrizable
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8
Why is 'abuse of notation' tolerated?
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8
Show: $\mathbb{C}=\overline{\mathbb{C}\setminus\left\{0\right\}}$
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7
How to understand why $x^0 = 1$, where $x$ is any real number?
math.stackexchange.com

7
Is there a Non-prime Number that is Divisible only by Numbers Greater than its Square Root?
math.stackexchange.com

7
Is the box topology good for anything?
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6
What's your favorite equation, formula, identity or inequality?
mathoverflow.net

6
Subset Relation: Is the subset relation a partial order?
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6
Which combination of Peano axioms shows that $0\neq 1?$
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5
Example of a conjecture/theorem which required an entirely new idea to prove
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5
Possibility of getting odd pair socks
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5
If all the vectors of a basis of a vector space are contained in another space, is the first space a subspace of the second?
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5
How it is posible that $\omega$-inconsistency does not lead to inconsistency
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5
Bad Fraction Reduction That Actually Works
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5
Does anyone know of any good ways to get good at algebra without as much"grind" as doing hundreds of questions a night
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5
What underlies formal logic (or math, generally)?
math.stackexchange.com

5
Getting nervous refereeing a paper
mathoverflow.net

5
Does convex continuous mapping have a unique fixed point?
mathoverflow.net

5
Is Scrabble's method of determining turn order fair?
math.stackexchange.com