By the Euler Product, the -function does not vanish in the half-plane . Thus, the simplest nontrivial assertion about the zeros of is that does not vanish on the line. Such a result is known as a Prime Number Theorem for . The name arises as follows. The classical Prime Number Theorem(PNT):
The Prime Number Theorem for was proven by Hadamard and de la Valee Poissin in 1896. Jacquet and Shalika [55 #5583] proved the corresponding result for -functions associated to automorphic representations on . It would be significant to prove such a result for the Selberg Class.
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