Neil G's user avatar
Neil G's user avatar
Neil G's user avatar
Neil G
  • Member for 13 years, 8 months
  • Last seen this week
52 votes
3 answers
35k views

Example where union of increasing sigma algebras is not a sigma algebra

34 votes
2 answers
9k views

What is an example of a lambda-system that is not a sigma algebra?

30 votes
2 answers
6k views

Beta function derivation

8 votes
1 answer
521 views

Why do lambda and pi go together?

6 votes
3 answers
363 views

Dealing with many entities that need a symbol

6 votes
4 answers
364 views

Which function satisfies these constraints?

5 votes
1 answer
3k views

Trace of a matrix times outer product

5 votes
2 answers
10k views

Why are the sets of rational and irrational numbers Borel sets (over the reals)?

4 votes
1 answer
221 views

Is there a name for $\frac{1}{\frac{1}{x} + \frac{1}{y}}$?

4 votes
1 answer
207 views

Is a product of integrals like distributing a product?

3 votes
2 answers
664 views

Notation for the set of all $x_i$

3 votes
1 answer
1k views

Why does the surface area of the hypersphere go to zero as the number of dimensions goes to infinity?

3 votes
1 answer
128 views

How do I isolate $S$ in $P = \overline S - RSR^{\mathsf H}$?

3 votes
1 answer
300 views

Sufficient statistic for product of $\Gamma(x + a_i)$

2 votes
2 answers
236 views

General nonatomic measure that cannot be expressed as an integral

2 votes
2 answers
610 views

Chinese remainder theorem

2 votes
0 answers
274 views

What are the parts of a derivative called?

2 votes
0 answers
64 views

Is this ring quadratically closed?

2 votes
1 answer
247 views

Convolution of probability densities. Having trouble integrating over vector

2 votes
1 answer
271 views

Graphically, what is positive semidefinite-ness?

1 vote
1 answer
40 views

Minimizing the area between an exponential and a polygonal approximation

1 vote
1 answer
152 views

Number of nodes on diagonal planes of a cube

1 vote
1 answer
235 views

What is the $d\sigma/\sigma$ rule?

1 vote
2 answers
509 views

Zeroing the carrier measure of an exponential family

1 vote
1 answer
145 views

multivariate derivative of integrals

1 vote
1 answer
97 views

zeroing out lower-order terms in generating function

0 votes
1 answer
1k views

Dimension of gradient operator

0 votes
1 answer
40 views

Convex cone of functions of the form $a\log(1+bx + ?)$

0 votes
1 answer
73 views

Convex function plus $v e^{-x}$

0 votes
1 answer
330 views

Why is the set of all continuous functions of size Beth one?