(economics) an economic theory that attempts to explain the exchange value or price of goods and services

(economics) The economy theory based around the cobweb model.

(mathematics) A theory of integral equations, concerning itself in the narrowest sense with the solution of the Fredholm integral equation.

A branch of probability theory that generalizes the compound Poisson process for arbitrary holding times.

A scientific theory that has been disproved, or for which attempts to prove it have failed, but which continues to be presented as a viable theory.

(medicine, historical) An obsolete theory of disease, proposing that a weak body attracts germs.

(mathematics) The systematic study of the situation of maps' having a homotopy between them; the study of equivalence classes (called homotopy classes) of maps.

(complex analysis) A part of the theory of meromorphic functions that describes the asymptotic distribution of solutions to the equation ƒ(z) = a, as a varies.

(complex analysis, differential geometry) A geometric counterpart to Nevanlinna theory that extends the applicability of the concept of covering surface (of a topological space) by defining a covering number (a generalised "degree of covering") applicable to any bordered Riemann surface equipped with a conformal Riemannian metric.

(cricket, dated) The tactic of bowling at or near the line of leg stump, so as to cramp the batsman.