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(cross-posted on crossvalidated) For random variable $(x,y)$ in $mathbb{R}^{d}times mathbb{R}^{d}$ and vector $v in mathbb{R}^d$, I need to perform the following matrix vector multiplication. $$T(v)=E[xy']v$$...
Asked on 10/07/2020 by Yaroslav Bulatov
0 answer(I previously asked this question on Sage's dedicated Q&A site, but got no response, so I figured it would be worth trying here.) I have a way of constructing hyperplane...
Asked on 10/05/2020 by Will Dana
1 answerIs the change in time step necessary for the grid independent study? As the CFL is based on the relation between dt and dx.In mesh independent study, only change...
Asked on 10/02/2020 by ram28
0 answerI'm currently doing some practice problems on root-finding and am writing up some notes / comments on my code. In my solver code, if my function value is below...
Asked on 09/28/2020 by user37069
0 answerMy problem is a little more complex, but here is a simplified similar model. Let us consider a fire source...
Asked on 09/26/2020 by Uday C K
0 answerCurrently, I am solving a problem in the format: M is an integer as well. The problem that troubles me...
Asked on 09/17/2020 by hidemyname
0 answerI'm using 4th order RK to solve the schroedinger equation in atomic units. Say I want to simulate 400fs in intervals of h=10fs, then in atomic units this is h=413a.u...
Asked on 09/08/2020 by Insert_Username
1 answerWhat is the cost of solving a linear system over a field F of size q by Gaussian Elimination?Thanks!...
Asked on 09/08/2020 by Kunal
0 answerFor finite dimensional symmetric positive semidefinite matrices $A$ and $B$, I would like to solve begin{align}&min |X - A|_1&text{subject to}&X preceq B&0 preceq Xend{align}...
Asked on 08/29/2020
1 answerI asked this question on the Computer Science stack exchange (https://cs.stackexchange.com/questions/128710/faster-computation-of-ke-x-h2), but it appears that it is more appropriate in Computational Science stack. Essentially, I want to compute ...
Asked on 08/12/2020 by Venkataram Sivaram
1 answerGet help from others!
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