What is the fine-grained topic of the following text: This is in contrast to other formulations using SBV functions as well as the theory of Structured deformations where the microscopic problem is viewed as discontinuous and the smoother plasticity formulation appears as a homogenized large length-scale limit. Only return the topic.
Contrast between SBV functions, theory of structured deformations, and plasticity formulation in microscopic problem analysis.