D-N model See COVERING LAW MODEL.

D’Alembert Jean Le Rond (1717–83), French mathematician, philosopher, and Encyclopedist. According...

D’Holbach Paul-Henri-Dietrich, Baron (1723– 89), French philosopher, a leading materialist and...

Damascene, John See JOHN OF DAMASCUS.

Damascius (c.462–c.550), Greek Neoplatonist philosopher, last head of the Athenian Academy...

Darwin, Charles See DARWINISM.

Darwinism the view that biological species evolve primarily by means of...

Darwinism, social See SOCIAL BIOLOGY.

Dasein See HEIDEGGER.

David See COMMENTARIES ON ARISTOTLE.

Davidson Donald (b.1917), American metaphysician and philosopher of mind and language....

De Beauvoir, Simone See EXISTENTIALISM. decidability, as a property of sets, the existence...

De dicto of what is said (or of the proposition), as opposed...

De dicto necessity See NECESSITY.

De la Ramée, Pierre See RAMUS.

De Morgan Augustus (1806–71), prolific British mathematician, logician, and philosopher of mathematics...

De Morgan’s laws the logical principles - (A 8 B) S - A...

De re See DE DICTO.

De re necessity See NECESSITY.

De se See DE DICTO, KNOWLEDGE DE RE.

Decidable See DECIDABILITY.

Decision theory the theory of rational decision, often called 'rational choice theory'...

Decision tree See DECISION THEORY.

Declining marginal utility See UTILITARIANISM.

Decomposability See MODULARITY.

Deconstruction a demonstration of the incompleteness or incoherence of a philosophical...

Dedekind Richard (1831–1916), German mathematician, one of the most important figures...

Dedekind cut See DEDEKIND.

Deducibility relation See DEDUCTION, Appendix of. Special Symbols. deduction, a finite sequence...

Deduction of the categories See KANT. deduction theorem, a result about certain systems of...