Generalized convexity conditions play a major role in many modern
mechanical applications. They serve as the basis for existence proofs
and allow for the design of advanced algorithms. Moreover, understanding
these convexity conditions helps in deriving reliable mechanical
models.
The book summarizes the well established as well as the newest results
in the field of poly-, quasi and rank-one convexity. Special emphasis is
put on the construction of anisotropic polyconvex energy functions with
applications to biomechanics and thin shells. In addition, phase
transitions with interfacial energy and the relaxation of nematic
elastomers are discussed.