negative eigen vector

[baha_tr]

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?

[Ruqiu_C_Intel]

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

[baha_tr]

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

[Chao_Y_Intel]

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

thanks,
Chao