Quantity See MAGNITUDE, SYLLOGISM.

Quantum logic the logic of which the models are certain non-Boolean algebras...

Quasi-indicator Castañeda's term for an expression used to ascribe indexical reference...

Quasi-quotes See CORNERS.

Quaternio terminorum See SYLLOGISM.

Quiddity See AVICENNA, ESSENTIALISM.

Quine W(illard) V(an) O(rman) (b.1908), American philosopher and logician, renowned for...

Quinque voces See PREDICABLES.

Rabad See IBN DAUD.

Racetrack paradox See ZENO'S PARADOXES.

Racism hostility, contempt, condescension, or prejudice, on the basis of social...

Radical translation See INDETERMINACY OF TRANS -. LATIO. Ramanuja (1017?–1137?), Indian philosopher...

Ramified type theory See TYPE THEORY.

Ramist movement See RAMUS.

Ramsey Frank Plumpton (1903–30), influential British philosopher of logic and mathematics....

Ramsey sentence See PHILOSOPHY OF MIND, PHI -. LOSOPHY OF SCIENC.

Ramsey test See RAMSEY.

Ramsey-eliminability See BETH'S DEFINABILITY THE-. ORE.

Ramus Petrus, in French, Pierre de La Ramée (1515–72), French philosopher...

Randomness See PHILOSOPHY OF SCIENCE.

Range See RELATION.

Rashdall Hastings (1858–1924), English historian, theologian, and personal idealist. While acknowledging...

Ratio recta See INDIRECT DISCOURSE.

Ratio scale See MAGNITUDE.

Rational choice theory See DECISION THEORY.

Rational number See MATHEMATICAL ANALYSIS.

Rational psychology the a priori study of the mind. This was a...

Rational reconstruction also called logical reconstruction, translation of a discourse of a...

Rationalism the position that reason has precedence over other ways of...

Rationalism, Continental See RATIONALISM.