Homotopy

Quick meaning: Homotopy is a noun meaning (topology) A continuous deformation of one continuous function or map to another.

Meaning

(topology) A continuous deformation of one continuous function or map to another.

More Meanings

1. (uncountable) The relationship between two continuous functions where homotopy from one to the other is evident.
2. (informal) Ellipsis of homotopy theory (“the systematic study of homotopies and their equivalence classes”).
3. (topology) A theory associating a system of groups with each topological space.
4. (topology) A system of groups associated with a topological space.

Example Sentences

The concept of homotopy represents a formalisation of the intuitive idea of a smooth deformation of one curve into another.

A graded Lie algebra arises from these maps via the Samelson product in homotopy, the so-called homotopy Lie algebra which is discussed below.

An integer M is called an exponent for the torsion of an abelian group G if M * (torsion of G) = 0. We say that M is a homotopy exponent for a space X if M is an exponent for πₖ (X) for all k.

2010, Vladimir G. Turaev, Homotopy Quantum Field Theory, European Mathematical Society, page xi, In this monograph we apply the idea of a TQFT to maps from manifolds to topological spaces. This leads us to a notion of a (d + 1)-dimensional homotopy quantum field theory (HQFT) which may be described as a TQFT for closed oriented d-dimensional manifolds and compact oriented (d + 1)-dimensional cobordisms endowed with maps to a given space X.

Word Forms

• homotopies

Related Words

Related dictionary entries include homeomorphism, self-homeomorphism, fibration, isotopy, topology, homology.

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