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VHarisop's user avatar
VHarisop's user avatar
VHarisop
  • Member for 8 years, 1 month
  • Last seen this week
  • Chicago, IL
8 votes
Accepted

Positive Definite Matrix Norm

6 votes

Computing the expectation of the number of balls in a box

5 votes
Accepted

Characterization of interior point of convex set using normal cones

5 votes

Concave down increasing example

4 votes
Accepted

Chi-squared distribution tail bound

4 votes

Orthogonal matrix ("if" or "if only")

4 votes
Accepted

Prove $\| A\|_2=\|A^T\|_2$

3 votes
Accepted

Newton Method for Scalar Field

3 votes
Accepted

What are the advantages of solving a system of linear equations with the LR algorithm? And why shouldn't I always use Gaussian elimination?

3 votes
Accepted

How to prove $\|(u-\eta \nabla f(u))-(v-\eta \nabla f(v))\| \leq\|u-v\|$?

3 votes
Accepted

Inequality of convex function with Lipschitz continuous gradient

3 votes
Accepted

Eigenvalue of PSD matrices by constrained SDP program

3 votes

Prove that a function is strongly convex

3 votes
Accepted

Operator norm linear regression

3 votes

How to prove the geometric mean is concave?

3 votes
Accepted

$Ax=0$ has trivial solution $\implies$ $Ax=b$ has a unique solution.

3 votes
Accepted

Proximal Operator of Summation of $ {L}_{1} $ Norm and $ {L}_{2, 1} $ Norm

3 votes
Accepted

Finding a CDF of a random variable

3 votes
Accepted

If $(X_1,X_2,X_3)$ is a gaussian vector, is $(X_1-X_2,X_3-X_2)$ a gaussian vector?

3 votes
Accepted

An inequality-constrained linear optimization problem in two variables

3 votes
Accepted

Showing a matrix is positive (semi) definite

2 votes
Accepted

How to get explicit form of polar cone?

2 votes
Accepted

Combinatorial proof for: $\left(\!{n \choose r}\!\right) = \left(\!{n \choose {r-1}}\!\right) + \left(\!{ {n - 1} \choose r }\!\right) $

2 votes
Accepted

MLE Estimation - Undefined Log Likelihood

2 votes

How to re-write this standard form equation in conic form.

2 votes
Accepted

Derive the Separability of 2D Gaussian

2 votes
Accepted

Explaining the Upper-bound for Big-O (e.g. O(n))?

2 votes

Relationship between $\langle \nabla f(\overline{x}), x - \overline{x}\rangle > 0$ and the the minimality of $\overline{x}$.

2 votes

Prove by induction that ${2n \choose n} > \frac{2^{2n-1}}{n}$ for every natural number n≥2

2 votes
Accepted

Introduction Mathematical Statistics, finding the Mean Square Error of estimators