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real number

(Encyclopedia)real number: see number.

Numbers

(Encyclopedia)Numbers, book of the Bible, fourth of the five books of the Law (the Pentateuch or Torah) ascribed by tradition to Moses. Numbers begins at Sinai and ends in Moab on the eve of the Hebrews' entry into...

number

(Encyclopedia)number, entity describing the magnitude or position of a mathematical object or extensions of these concepts. A real or complex number z is called algebraic if it is the root of a polynomial equati...

field, in algebra

(Encyclopedia)field, in algebra, set of elements (usually numbers) that may be combined under the operations of addition and multiplication so that it constitutes an additive group, the nonzero elements form a mult...

quaternion

(Encyclopedia)quaternion kwətûrˈnēən [key], in mathematics, a type of higher complex number first suggested by Sir William R. Hamilton in 1843. A complex number is a number of the form a+bi when a and b are re...

Ciudad Real

(Encyclopedia)Ciudad Real thyo͞oᵺäᵺˈ rāälˈ [key], city, capital of Ciudad Real prov., cen...

real estate

(Encyclopedia)real estate: see property.

Real Presence

(Encyclopedia)Real Presence, expression of the belief among certain Christians, especially Roman Catholics and some Anglicans, that the actual presence of the body and blood of Jesus is in the Eucharist. Saints Ign...

real property

(Encyclopedia)real property: see property.

transfinite number

(Encyclopedia)transfinite number, cardinal or ordinal number designating the magnitude (power) or order of an infinite set; the theory of transfinite numbers was introduced by Georg Cantor in 1874. The cardinal num...