In mathematics and physics, pregeometry has several meanings:
* In combinatorics and most other mathematics, a
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Pregeometry (model theory) — Pregeometry, and in full combinatorial pregeometry, are essentially synonyms for matroid . They were introduced by G. C. Rota with the intention of providing a less ineffably cacaphonous alternative term. Also, the term combinatorial geometry,… … Wikipedia
Pregeometry (physics) — Pregeometry, in physics, means a structure from which geometry develops. The term was championed by John Archibald Wheeler in the 1960s and 1970s as a possible route to a theory of quantum gravity. Since quantum mechanics allowed a metric to… … Wikipedia
List of mathematics articles (P) — NOTOC P P = NP problem P adic analysis P adic number P adic order P compact group P group P² irreducible P Laplacian P matrix P rep P value P vector P y method Pacific Journal of Mathematics Package merge algorithm Packed storage matrix Packing… … Wikipedia
Matroid — In combinatorics, a branch of mathematics, a matroid ( /ˈmeɪ … Wikipedia
List of mathematical logic topics — Clicking on related changes shows a list of most recent edits of articles to which this page links. This page links to itself in order that recent changes to this page will also be included in related changes. This is a list of mathematical logic … Wikipedia
Rolling ball — In topology, quantum mechanics and geometrodynamics, rolling ball arguments are used to describe how the perceived geometry and connectivity of a surface can be scale dependent.If a researcher probes the shape of an intricately curved surface by… … Wikipedia
Event symmetry — The term Event symmetry describes invariance principles that have been used in some discrete approaches to quantum gravity where the diffeomorphism invariance of general relativity can be extended to a covariance under any permutation of… … Wikipedia
Strongly minimal theory — In model theory a branch of mathematical logic a minimal structure is an infinite one sorted structure such that every subset of its domain that is definable with parameters is either finite or cofinite. A strongly minimal theory is a complete… … Wikipedia
