(economics, political science) Alternative form of labor value theory.

(economics, political science) UK standard spelling of labor theory of value.

(quantum mechanics) A theory of quantum fields; the result of applying second quantization to Classical Relativistic Field Theory.

(history, linguistics, Indo-European studies) The hypothesis that the Aryans are indigenous to the Indian subcontinent, and that the Indo-European languages radiated out from a homeland in India into their present locations.

(number theory) The branch of number theory that deals with transcendental numbers.

(mathematics, number theory) A branch of number theory that uses methods from mathematical analysis to solve problems about the integers.

(number theory) The subfield of number theory concerning the behaviour of sumsets (integer sets added to each other elementwise).

plural of algebraic graph theory

(uncountable, mathematics, graph theory) The subbranch of graph theory in which algebraic methods are applied to problems about graphs.

(algebraic geometry) K-theory studied from the point of view of algebra.