[QE-users] meaning of Sym.Ops. (with q -> -q+G )

[KRISHNENDU MUKHERJEE]

Dear pw-user, 




While running the ph.x code I am getting the following in the output: 




Computing dynamical matrix for 

q = ( 0.0000000 0.0000000 0.0000000 ) 




3 Sym.Ops. (with q -> -q+G ) 




Can you please let me know what does Sym.Ops. (with q -> -q+G ) mean? 




Thank you, 

Regards, 

Krishnendu Mukherjee, Ph.D., 




Principal Scientist, 

CSIR-NML, 

India. 

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