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

The theory that people who are regularly exposed to mass media eventually come to perceive the world's social realities as presented by the media, affecting their attitudes and behaviours.

(sciences, of a theory) a highly simplified model used to explore systems qualitatively

(sociology) An ontological framework developed by Gilles Deleuze and Félix Guattari for the analysis of social complexity by emphasizing fluidity, exchangeability, and multiple functionalities.

Used other than figuratively or idiomatically: see scheme, theory. / (algebraic geometry) The branch of mathematics that concerns schemes (algebraic varieties equipped with the Zariski topology).

The idea of using small suggestions to influence behavior and decision making.

(mathematics, algebra) A branch of mathematics that studies abstract algebraic structures by representing their elements as linear transformations of vector spaces, and studies modules over these abstract algebraic structures.

A postmodern approach to analysing intersubjective discourses, based on the ways that authority is rooted in individuals' knowledge and perspectives, and the power that such authority exerts.

(physics) A type of field theory in which the Lagrangian is invariant under a continuous group of local transformations.

(mathematics, uncountable) The branch of mathematics concerned with lattices (partially ordered sets).