%0 Journal Article %T On traces of Frobenius endomorphisms %A Igor Nikolaev %J Mathematics %D 2009 %I arXiv %R 10.1016/j.ffa.2013.10.003 %X We compute the number of points of projective variety V over a finite field in terms of invariants of the so-called Serre C*-algebra of V. %U http://arxiv.org/abs/0909.1994v4