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In geometry, the parallel postulate, also called Euclid's fifth postulate because it is the fifth postulate in Euclid's Elements, is a distinctive axiom...

Koch's postulates (/kɒx/ KOKH) are four criteria designed to establish a causal relationship between a microbe and a disease. The postulates were formulated...

An axiom, postulate, or assumption is a statement that is taken to be true, to serve as a premise or starting point for further reasoning and arguments...

The Planck postulate (or Planck's postulate), one of the fundamental principles of quantum mechanics, is the postulate that the energy of oscillators...

seemed so intuitively obvious (with the possible exception of the parallel postulate) that theorems proved from them were deemed absolutely true, and thus...

Hammond's postulate (or alternatively the Hammond–Leffler postulate), is a hypothesis in physical organic chemistry which describes the geometric structure...

In number theory, Bertrand's postulate is the theorem that for any integer n > 3 {\displaystyle n>3} , there exists at least one prime number p {\displaystyle...

The mentalist postulate is the thesis that meaning in natural language is an information structure that is mentally encoded by human beings. It is a basic...

from principle now called the postulates of special relativity. Einstein's formulation is said to only require two postulates, though his derivation implies...

composite system postulate (tensor product postulate) and the unitary evolution postulate (Postulate III). Furthermore, to the postulates of quantum mechanics...

geometry, the AA postulate states that two triangles are similar if they have two corresponding angles congruent. The AA postulate follows from the fact...

triangle postulate states that the sum of the angles of a triangle is two right angles. This postulate is equivalent to the parallel postulate. In the...

mathematics are evident in his criticism of contemporaneous attempts to prove the parallel postulate in Euclidean geometry. Writing shortly before the discovery...

The state postulate is a term used in thermodynamics that defines the given number of properties to a thermodynamic system in a state of equilibrium....

In formal semantics and philosophy of language, a meaning postulate is a way of stipulating a relationship between the meanings of two or more words....

of the fifth postulate of Euclid (the parallel postulate): In a plane, given a line and a point not on it, at most one line parallel to the given line...

observers, regardless of the motion of light source or observer. The first postulate was first formulated by Galileo Galilei (see Galilean invariance). Special...

Church. The qualifications, role and function of the postulator are spelled out in the Norms to be Observed in Inquiries made by Bishops in the Causes...

nature of parallel lines. Euclid's fifth postulate, the parallel postulate, is equivalent to Playfair's postulate, which states that, within a two-dimensional...

without the parallel postulate or any of its alternatives. Traditionally, this has meant using only the first four of Euclid's postulates. The term was introduced...