Question

at http://tutorial.math.lamar.edu/Classes/DE/ConvolutionIntegrals.aspx the author has used tau (if I am not wrong) does it have to do anything with topology or has it been used here just as a symbol?

Answer 1

@TuringTest dude let me know your view on it (provided whenever you are online)

Answer 2

Tau is equivalent to 2Pi

Answer 3

In this case Tau is just a symbol. You can tell because since the integrals are with respect to Tau, it must be the free variable.

Answer 4

thanks @Blacksteel