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单词 LocallyCompactHausdorffSpaces
释义

locally compact Hausdorff spaces


1 Locally compact Hausdorff spaces

Definition 1.1.

A locally compact Hausdorff spacePlanetmathPlanetmath HLC is alocally compact topological space (http://planetmath.org/LocallyCompact) (XLC,τ) with τ being aHausdorff topology (http://planetmath.org/T2Space), that is, if given any distinct points x,yXLC, there exist disjointsets U,Vτ such that, UV= (that is, open sets), and with x and y satisfying the conditions that xU and yV.

Remark 1.1.

An important, related concept to the locally compact Hausdorff space is that of a locally compact (topological)groupoidPlanetmathPlanetmathPlanetmathPlanetmath, which is a major concept for realizing extended quantum symmetries interms of quantum groupoidPlanetmathPlanetmath representations in: quantum algebraic topology (QAT), topological QFT (TQFT), algebraic QFT (AQFT), axiomatic QFT, QCG, and quantum gravity (QG). This has also prompted the relatively recent development of the concepts of homotopyMathworldPlanetmath 2-groupoid and homotopy double groupoid of aHausdorff space [1, 2]. It would be interesting to have also axiomatic definitions of these two important algebraic topology concepts that are consistent with the T2 axiom.

References

  • 1 K.A. Hardie, K.H. Kamps and R.W. Kieboom., A homotopy 2-groupoid of a Hausdorff space,Applied Cat. Structures, 8 (2000): 209-234.
  • 2 R. Brown, K.A. Hardie, K.H. Kamps and T. Porter, A homotopy double groupoidPlanetmathPlanetmath of a Hausdorffspace, Theory and Applications of Categories 10,(2002): 71-93.
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