Ben Golub's user avatar
Ben Golub's user avatar
Ben Golub's user avatar
Ben Golub
  • Member for 13 years, 8 months
  • Last seen more than a month ago
12 votes
3 answers
1k views

Is there a simple inductive procedure for generating labeled trees uniformly at random, without direct recourse to Prüfer sequences?

11 votes
5 answers
2k views

Is it possible to have t triangles in some graph on n vertices?

9 votes
0 answers
295 views

Convergence in $L^2$ of iterated expectations

8 votes
2 answers
536 views

When do iterated conditional expectations converge?

8 votes
1 answer
378 views

Take a matrix with normalized rows; no column of the inverse has too large a norm

8 votes
1 answer
676 views

Probabilistic proof for derivative of invariant distribution of a Markov chain

6 votes
1 answer
225 views

Positive semidefinite ordering for covariance matrices

6 votes
1 answer
216 views

Finding cohesive (low exit probability) sets in a Markov process

6 votes
1 answer
2k views

Do the tails of the decimal expansion of pi form a dense set in [0,1]?

5 votes
1 answer
325 views

Bounding the sensitivity of a posterior mean to changes in a single data point

4 votes
1 answer
1k views

Inverse of matrix with blocks of ones

2 votes
1 answer
514 views

Neighborhood overlap matrix for a bipartite graph

2 votes
1 answer
1k views

Limit of an integral involving the normal CDF

2 votes
4 answers
357 views

When do functions near F have zeros near a zero of F?

1 vote
1 answer
222 views

f_n(x,p) converge uniformly to nice f(x,p); do zeros of f_n(.,p) converge uniformly to zeros of f(.,p)?

1 vote
1 answer
468 views

When is a coarsening of a Markov chain Markov?

1 vote
2 answers
1k views

A is a nonnegative matrix; the only principal submatrix having spectral radius above 1 is A itself

1 vote
0 answers
87 views

In percolation on a lattice, how is "infected" status correlated for points in a region around the origin?

1 vote
0 answers
394 views

Difference between largest two eigenvalues of a graph Laplacian

0 votes
0 answers
224 views

When does a real-valued function of a matrix depend only on eigenvalues?