The mathematics generation gap, by Frances Woolley: Here's my theory: Some students struggle with economics because they do not fully understand the mathematical tools economists use.

We study the Dirichlet problem for discrete harmonic functions in unbounded product domains on multidimensional lattices. First we prove some versions of the Phragmén-Lindelöf theorem and use Fourier ...

In this paper we construct the main ingredients of a discrete function theory in higher dimensions by means of a new "skew" type of Weyl relations. We will show that this new type overcomes the ...