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Returning the favour..one for Acolyte

Returning the favour..one for Acolyte

Posers and Puzzles

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Let z be a complex number. Let

S(z) = 1 + 2^-z + 3^-z + 4^-z + ....

Show that all the zeros of this function are either negative even integers or of the form 1/2 + it. Enjoy 😛!

EDIT I have no idea how to come up with a solid proof...and I've tried.

EDIT THE SECOND My sarcastic streak strikes again! Either try this question or look it up to see why....