%0 Journal Article %T Frobenius map for quintic threefolds %A I. Shapiro %J Mathematics %D 2008 %I arXiv %X We calculate the matrix of the Frobenius map on the middle dimensional cohomology of the one parameter family that is related by mirror symmetry to the family of all quintic threefolds. %U http://arxiv.org/abs/0809.3742v2