A mathematical function is a formula that takes an input, x, applies a set of calculations to it, and produces an output called y. By calculating a function at a large number of set intervals, it is ...

Political Analysis, Vol. 19, No. 1 (Winter 2011), pp. 66-86 (21 pages) Methods for descriptive network analysis have reached statistical maturity and general acceptance across the social sciences in ...

Our results in this paper increase the model-theoretic precision of a widely used method for building ultrafilters. and so advance the general problem of constructing ultrafilters whose ultrapowers ...