topic negative eigen vector in Intel® oneAPI Math Kernel Library

negative eigen vector

baha_tr — Tue, 12 Nov 2024 16:17:11 GMT

I use the dsyevx library when calculating eigenvalues and eigenvectors in a two-dimensional matrix, but the values of the eigenvector (negative wave function) are negative. What is the reason?

Re: negative eigen vector

Ruqiu_C_Intel — Thu, 14 Nov 2024 06:39:09 GMT

It's hard to say what's the reason for your issue without checking your code. Attached dsyevx example for your reference.

Re: negative eigen vector

baha_tr — Thu, 14 Nov 2024 16:51:47 GMT

Unfortunately, when I tried to solve 2D eigenvectors, the library founds the wave functions negative.

Re: negative eigen vector

Chao_Y_Intel — Wed, 27 Nov 2024 12:57:43 GMT

Hi, do you have a reproducible code that can help investigate this problem?

thanks,
Chao