👉 The term "schwarzian" is a term from the mathematical field of functional analysis, specifically in the context of the theory of linear operators. It refers to a special type of operator that can be defined as a linear operator with a non-zero kernel and a compact resolvent. A non-zero kernel means that there exists at least one vector x such that Ax = 0 for some matrix A. The compact resolvent is a property that describes the behavior of the operator when it is