Proceedings of the American Mathematical Society, Vol. 140, No. 11 (NOVEMBER 2012), pp. 3749-3760 (12 pages) In this paper, we will give a recursion formula for double Hurwitz numbers by the cut-join ...
Researchers at the University of Tübingen have found via experimentation that crows are capable of understanding the concept of recursion. In their paper published in the journal Science Advances, ...