# New post in Convex-analysis

March 2nd, 2020

## Prove that the intersection of convex sets is convex using the following three points...

February 25th, 2020

August 1st, 2022

August 1st, 2022

August 1st, 2022

## Orthogonal projection of a vector onto convex set

September 1st, 2020

## Is this function convex or concave on $(x,y,z)$?

February 17th, 2020

## When does infinite intersection preserve a closed property?

October 24th, 2020

August 1st, 2022

## Finite optimal value for a linear program with unbounded feasible region.

December 4th, 2020

## How to Prove the ${L}_{\infty}$ Ball Is Convex?

January 4th, 2020

August 1st, 2022

August 1st, 2022

August 1st, 2022

August 1st, 2022

August 1st, 2022

## Conditions for unique solution of a maximization problem?

December 4th, 2020

## How to express a set as an intersection of halfspaces

November 20th, 2020

July 19th, 2021

April 25th, 2020

## How to extract the positive semidefinite part of a matrix

November 20th, 2020

March 21st, 2020

June 10th, 2020

## Convexity check sub- / superlevel sets

October 15th, 2020

August 1st, 2022

## Prove convexity of quadratic function

September 21st, 2020

## Extreme directions of $S=\{x:-x_1+2x_2\le 4,x_1-3x_2\le 3,x_1,x_2\ge 0\}$

February 4th, 2020

April 28th, 2020

August 1st, 2022

August 1st, 2022