Kevin P. Costello

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Name	Kevin P. Costello
Member for	3 years
Seen	38 mins ago
Website	math.ucr.edu/~costello
Location	Riverside, CA
Age	31

Currently an Assistant Professor at UC-Riverside. Interested in Combinatorics, Probability, and especially in their intersection.

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When does a pointwise CLT hold?

pr.probability

jan 4 10 at 4:47 Kevin O'Bryant 6,442●1●27●54

44

Answers

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If you break a stick at two points chosen uniformly, the probability the three resulting sticks form a triangle is 1/4. Is there a “nice” proof of this fact?

What’s a nice argument that shows the volume of the unit n-ball in R^n approaches 0?

A strange sum over bipartite graphs

Number of invertible {0,1} real matrices?

Cauchy-Schwarz and pigeonhole

What are some good examples of non-monotone graph properties?

Invertibility of a certain matrix indexed by the Hamming cube

The latice spanned by $m$ random 0-1 vectors of length $n$ (2)

Undergraduate Level Math Books

Splitting pythagorean triples

Bound on cardinality of a union

Non trivial colouring of the edges of an infinite complete graph

Singularity of sparse random matrices

The middle eigenvalues of an undirected graph

Given a sequence defined on the positive integers, how should it be extended to be defined at zero?

Existence of a nice subset of edges in $k-$regular simple graphs?

Discrete disjoint covering of integer lattices

Bounds on maximal eigenvalue of a k-regular graph

“sparse graphs are locally tree-like”

Concentration results for inner products of two independent random gaussian vectors

how to cover a set in a grid with as few rectangles as possible

Best lower bound for off-diagonal Ramsey numbers

Spectrum of the Laplacian on G(n, p) and G(n, M)

Linear Algebra Over F_{2}

What are the Schur functions of the eigenvalues of a non-negative integer matrix counting?

Asymptotics of the number of compositions whose summands are the divisors of a number?

Random Alternating Permutations

Primes are pseudorandom?

Does an $n$ dimensional subspace intersect the $n$-facets of the unit cube?

Large Intersecting Subsets of a Set

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