continuum hypothesis

Noun

continuum hypothesis

1. The hypothesis which states that any infinite subset of ℝ must have the cardinality of either the set of natural numbers or of ℝ itself.
   • In other words, it is consistent with the axioms^([of set theory]) to suppose that the continuum hypothesis is false. (It had been known for some time — see below — that it is consistent with the axioms of set theory to suppose that CH is true.)2002, Steven G. Krantz, Handbook of Logic and Proof Techniques for Computer Science, Springer (Birkhäuser), page 65
   • After all, when Paul Cohen sent his proof of the undecidability of the continuum hypothesis (which Badiou considers an “event”) to Kurt Gödel in 1963, Gödel wrote back that “reading your proof had a similarly pleasant effect on me as seeing a good play."2013, Kenneth Reinhard, Introduction, Susan Spitzer (translator), Alain Badiou, The Incident at Antioch: A Tragedy in Three Acts / L’Incident d’Antioche: Tragédie en trois actes, Columbia University...

   Synonyms:

   CH, continuum assumption

2. (continuum mechanics) The assumption, for the purposes of mathematical modelling, that the material being studied is a continuous mass rather than being composed of discrete particles.
   • Under the continuum hypothesis, the material being studied, whether it be solid liquid or gas, is assumed to be continuous.2002, C. S. Jog, Foundations and Applications of Mechanics, Volume 1: Continuum Mechanics, CRC Press, page 75
   • Because matter is composed of molecules, the continuum hypothesis implies that a very small volume will contain a large number of molecules.2006, Z. U. A. Warsi, Fluid Dynamics: Theoretical and Computational Approaches, 3rd edition, Taylor & Francis (CRC Press), page 1