The embedding problem for Markov matrices 

    Roca Lacostena, Jordi (Fecha de defensa: 2021-05-18)

    The goal of this thesis is to solve the embedding problem for Markov matrices, posed by Gustav Elfving in1937. A Markov matrix is non-negative square matrix whose rows sum to 1. We say that such a matrix M is embeddable ...

    The variational approach to brittle fracture in materials with anisotropic surface energy and in thin sheets 

    Li, Bin (Fecha de defensa: 2016-03-08)

    Fracture mechanics of brittle materials has focused on bulk materials with isotropic surface energy. In this situation different physical principles for crack path selection are very similar or even equivalent. The situation ...