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71Myhill isomorphism theorem — For the Goodman–Myhill theorem in constructive set theory, see Diaconescu s theorem. In computability theory the Myhill isomorphism theorem, named after John Myhill, provides a characterization for two numberings to induce the same notion of… …
72Biological naturalism — is a monist theory about the relationship between mind and body (i.e. brain), and hence an approach to the mind body problem. It was first proposed by the philosopher John Searle in 1980 and is defined by two main theses: 1) all mental phenomena… …
73Deligne–Lusztig theory — In mathematics, Deligne–Lusztig theory is a way of constructing linear representations of finite groups of Lie type using ℓ adic cohomology with compact support, introduced by Deligne Lusztig (1976). Lusztig (1984) used these representations to… …
74Representation theory of SL2(R) — In mathematics, the main results concerning irreducible unitary representations of the Lie group SL2(R) are due to Gelfand and Naimark (1946), V. Bargmann (1947), and Harish Chandra (1952). Structure of the complexified Lie algebra We choose a… …
75Hyperarithmetical theory — In recursion theory, hyperarithmetic theory is a generalization of Turing computability. It has close connections with definability in second order arithmetic and with weak systems of set theory such as Kripke–Platek set theory. It is an… …
76Seiberg–Witten invariant — In mathematics, Seiberg–Witten invariants are invariants of compact smooth 4 manifolds introduced by harvtxt|Witten|1994, using the Seiberg Witten theory studied by harvs|txt=yes|last=Seiberg|last2=Witten|year1=1994a|year2=1994b during their… …
77Representation theory — This article is about the theory of representations of algebraic structures by linear transformations and matrices. For the more general notion of representations throughout mathematics, see representation (mathematics). Representation theory is… …
78materialism — /meuh tear ee euh liz euhm/, n. 1. preoccupation with or emphasis on material objects, comforts, and considerations, with a disinterest in or rejection of spiritual, intellectual, or cultural values. 2. the philosophical theory that regards… …
79metaphysics — /met euh fiz iks/, n. (used with a sing. v.) 1. the branch of philosophy that treats of first principles, includes ontology and cosmology, and is intimately connected with epistemology. 2. philosophy, esp. in its more abstruse branches. 3. the… …
80phenomenalism — phenomenalist, n. phenomenalistic, adj. phenomenalistically, adv. /fi nom euh nl iz euhm/, n. Philos. 1. the doctrine that phenomena are the only objects of knowledge or the only form of reality. 2. the view that all things, including human… …
