megas's user avatar
megas's user avatar
megas's user avatar
megas
  • Member for 9 years, 3 months
  • Last seen more than 7 years ago
  • Austin, TX
11 votes
Accepted

To show that $\operatorname{Rank}(\mathbf{A}-\mathbf{I})=\operatorname{Nullity}(\mathbf{A})$

9 votes
Accepted

Can a positive definite matrix have an eigenvalue equal to zero

7 votes

How to find max and min of this quadratic form?

6 votes
Accepted

Are "Balls in Bins" and "Stars and bars" the same?

5 votes

Linear Optimization - Number of equations being less than number of variables

4 votes
Accepted

Linear programming algorithm that minimizes number of non-zero variables?

4 votes
Accepted

Finding the angle value given 1 point and the centre of a circle

4 votes
Accepted

How to get rid of linearly dependent columns of a given matrix on matlab

4 votes

Triangle containing most points from a set

3 votes

Prove Algebraically .... $\binom{n}{k}=\frac{n\binom{n-1}{k-1}}k$

3 votes
Accepted

Prove the characteristic equation is of degree n

3 votes
Accepted

Can $Z$ be a function of $X$ and $Y$?

3 votes
Accepted

Optimization of a quadratic function with qudratic constraints

3 votes

Unknown Problem - Need Help

3 votes
Accepted

Does $P(X=a) = P(X=b) = \frac12$ maximize $\mathrm{Var}(X)$ over RVs a.s. taking values in $[a,b]$?

3 votes
Accepted

Efficient way of checking linear independence

3 votes
Accepted

Splitting up A Conditional Probability

3 votes
Accepted

Whether a set of vectors span a subspace that includes a given vector

3 votes

Formula for Heads or tails task

3 votes
Accepted

Proving Lipshitz continuous over a convex set with Projection Operator

2 votes

How to find the number of possible outcomes of 10 games between 20 teams?

2 votes
Accepted

In graph theory, what does $o(G)$ usually mean?

2 votes
Accepted

How close apart are two message - "Document Distance" algorithm

2 votes
Accepted

Space is direct sum of subspaces - propostion conditions giving me problems

2 votes
Accepted

Why the largest singular value of a magic matrix is its magic constant?

2 votes
Accepted

Convergence in probability given that covariance matrix goes to $0$

2 votes
Accepted

Over-specified linear system

2 votes

Some help with basic probability

2 votes

Conditional Expectation of a discrete random variable given a sum involving the random variable.

2 votes
Accepted

KKT multipliers sign convention