Produkt mají v nabídce:
Introduction to Maximum Principles and Symmetry in Elliptic Problems - Fraenkel, L. E. (University of Bath)
The author of this 2000 volume proceeds from elementary facts about the linear case to recent results about positive solutions of non-linear elliptic equations, with minimal prerequisites in a style suited to graduate students. There is a plentiful supply of exercises, with detailed hints, some of which contain new results.