%0 Journal Article %T Estimates of Characteristic numbers of real algebraic varieties %A Yves Laszlo %A Claude Viterbo %J Mathematics %D 2004 %I arXiv %X We give some explicit bounds for the number of cobordism classes of real algebraic manifolds of real degree less than $d$, and for the size of the sum of $\mod 2$ Betti numbers for the real form of complex manifolds of complex degree less than $d$. %U http://arxiv.org/abs/math/0412250v1