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(x+2π , y+2π)~( -x,-y) ?

zwiebach yes , I'm interested : valfano@inwind.it thank

Zwiebach solutions Dear forum, have you the Zwiebach's book's solutions? thanks :valfano@inwind.it

Dear forum, have you the Zwiebach's book's solutions? thanks :valfano@inwind.it

Hello, i have a difficult ( for me ) problem : i have download FEYNMF and i draw the Feynman diagrams but WITHOUT label (example mu , nu , Z, e-, e+, etc.etc.) . Help , thanks