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 ...

As part of a series of electronic professional development experiences for educators, the NASA Explorer Schools project is hosting a 60-minute Web seminar on Sept. 27, 2011, at 8 p.m. EDT. Investigate ...

Practice how to recognise and determine the equation of a quadratic function from its graph ahead of your National 5 Maths exam with this interactive maths quiz. The equation of a a quadratic function ...