Paul Bourdon

World financiers meet at a secluded chateau in the French countryside of Aquitaine to create a global currency ... oil must spike out of control to topple the US dollar ... an oil rig explodes in the Gulf of Mexico ... a secret report from the Soviet Northern Fleet hits the internet, but is mysteriously scrubbed before its lethal intel goes viral. Devon McKenzie returns with the help of CIA Agent Aaron Cohen. Is there time to thwart the ecological disasters that threaten the stability of the world?

This is a book about harmonic functions in Euclidean space. Readers with a background in real and complex analysis at the beginning graduate level will feel comfortable with the material presented here. The authors have taken unusual care to motivate concepts and simplify proofs. Topics include: basic properties of harmonic functions, Poisson integrals, the Kelvin transform, spherical harmonics, harmonic Hardy spaces, harmonic Bergman spaces, the decomposition theorem, Laurent expansions, isolated singularities, and the Dirichlet problem. The new edition contains a completely rewritten chapter on spherical harmonics, a new section on extensions of Bocher's Theorem, new exercises and proofs, as well as revisions throughout to improve the text. A unique software package-designed by the authors and available by e-mail - supplements the text for readers who wish to explore harmonic function theory on a computer.