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triomphe
  • Member for 9 years, 8 months
  • Last seen more than 4 years ago
23 votes
3 answers
10k views

Difference of mapsto and right arrow

19 votes
2 answers
22k views

Second derivative positive $\implies$ convex

19 votes
1 answer
5k views

Why do mathematicians use only symmetric matrices when they want positive semi-definite matrices?

10 votes
2 answers
6k views

Jensen's Inequality (with probability one)

10 votes
3 answers
380 views

What does it mean to be $0.9-$Dimension?

10 votes
7 answers
4k views

Enjoyable book to learn Topology.

9 votes
1 answer
3k views

Could we write Fourier transform as a matrix?

8 votes
1 answer
685 views

$\max\min$ problem

8 votes
3 answers
16k views

Improbable vs Impossible?

8 votes
3 answers
7k views

Optimization of a function of two variables.

8 votes
1 answer
5k views

Variance of a sum of complex independent random variables

7 votes
1 answer
778 views

Joint distribution by independent distributions

6 votes
2 answers
6k views

Bound for probability of the intersection of a set of events

5 votes
1 answer
250 views

Ergodic Process: Does it visit all state?

5 votes
1 answer
996 views

Poisson point process (PPP) and Voronoi cells

5 votes
1 answer
833 views

Simplifying the expectation of a ratio of exponential random variables.

5 votes
0 answers
616 views

Fractal dimension of Gaussian white noise is infinite?

5 votes
2 answers
161 views

Is this monotonic in $a,b$?

4 votes
1 answer
52 views

Is $\det(I+aAVV^*A^*)$ increasing function in $a$.

4 votes
2 answers
628 views

Derivative of $f(z)=az$ at infinity is $\frac{1}{a}$?

4 votes
2 answers
4k views

What is the opposite of the statement "$X$ and $Y$ is true"?

4 votes
1 answer
587 views

Eigenvalues of $AB$ from eigenvalues of $A$ and $B$

4 votes
1 answer
1k views

Function of stationary processes

4 votes
2 answers
2k views

Is wide sense stationary iff second order stationary?

4 votes
1 answer
4k views

Clear definition of degeneracy of a graph.

3 votes
2 answers
2k views

Upper bound for a probability expression

3 votes
2 answers
127 views

Is this determinant identity correct?

3 votes
1 answer
110 views

Is this determinant identity true?

3 votes
1 answer
191 views

Independence of complex random variables

3 votes
5 answers
308 views

A limit problem $0\log \cfrac{0}{0}=0$