Dear Sukhwinder Singh,
Which kind of topological calculations do you want to perform? To get you started, you can have a look at the Tutorial http://z2pack.ethz.ch/doc/2.0/tutorial.html and Quantum Espresso examples http://z2pack.ethz.ch/doc/2.0/example_espresso.html. Don't hesitate to ask if you encounter some problems or have a specific question.
Best regards,
Dominik Gresch
On 09.02.2017 19:57, Sukhwinder Singh wrote:
Good morning I am Sukhwinder Singh pursuing research at panjab university Chandigarh. I works on dft calculation by using Quantum espresso.I want to calculate topological behavior . I want to know how it's check.