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kimchi lover
  • Member for 6 years, 11 months
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31 votes

What is the probability that two random subsets of a superset have no intersection?

25 votes

What is the theory of Matrices?

18 votes
Accepted

When should an equation be numbered when writing a paper?

17 votes
Accepted

Is this a well-known pseudo-random number generator?

15 votes

Collecting math websites

13 votes

Are positive definite matrices robust to "small changes"?

13 votes
Accepted

Continuous function with infinitely many zeros

11 votes
Accepted

Closed balls are closed

11 votes
Accepted

Deciphering Salvador Dali's geometric formula $\frac{R}{2} \sqrt{n-2 \sqrt{5}}$ in "Leda Atomica"

10 votes
Accepted

For measurable $f: \mathbb{R} \rightarrow \mathbb{R}$ prove $f(x)$ and $\frac{1}{f(1/x)}$ cannot both be Lebesgue integrable.

9 votes
Accepted

Number of zeros in difference of exponential sums: $\sum\limits_{i=1}^n a_i^x - \sum\limits_{i=1}^n b_i^x$

9 votes

Has this chaotic map been studied?

9 votes
Accepted

What does a semicolon denote in the context of probability and statistics?

9 votes
Accepted

Why are singular values of "complex" matrices always real and non-negative?

9 votes
Accepted

Prove that 0 is in the convex hull of points chosen from each orthant

8 votes

Probability that THHT occurs in a sequence of 10 coin tosses

8 votes
Accepted

Proof of the delta method

8 votes

Mathematical adjectives that bear famous mathematician's names

8 votes

How to compute $\int_0^\infty e^{-a(s^2+1/s^2)}\, ds$

8 votes
Accepted

Why, if $X_1,...,X_n$ are pairwise independent, is $\sum_{i=1}^{k} X_i$ independent from $X_{k+1}$?

7 votes
Accepted

Probability of getting 6 heads in a row from 200 flips and intuition about this high value

7 votes
Accepted

Definition of "identical in distribution"

7 votes

Minimize $\min_{f\in E}\left(\int_0^1f(x) dx\right)$

7 votes
Accepted

Functional Central Limit Theorem

7 votes

Show that vectors $u$ and $v$ are linearly independent iff $u+v$ and $u-v$ are linearly independent.

7 votes

Who established the tradition of using $X^{\prime}$ instead of $X^{T}$ to denote the matrix transpose?

6 votes
Accepted

polynomials converging point wise to $f$ on $\mathbb{R}$

6 votes

Show that $n!^{1\over n}$ is increasing

6 votes
Accepted

Maximum of $E[|X+Z|^m]$ for $Z$ standard normal and $X$ independent of $Z$, two-valued, with $E[|X|^k]=c$

6 votes
Accepted

Show that if X and Y are i.i.d random variables such that $\mathbb{E}(X-Y)^{2}<\infty$, then $\mathbb{E}X^{2}<\infty$

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