On the Construction of a Groupoid from an Ample Hausdorff Groupoid with Twisted Steinberg Algebra not Isomorphic to its Non-twisted Steinberg Algebra

Authors

  • Rizalyn Bongcawel Mindanao State University - Iligan Institute of Technology
  • Lyster Rey Cabardo Mindanao State University - Iligan Institute of Technology
  • Gaudencio Petalcorin Jr Mindanao State University - Iligan Institute of Technology
  • Jocelyn Vilela Mindanao State University - Iligan Institute of Technology

DOI:

https://doi.org/10.29020/nybg.ejpam.v17i1.5051

Keywords:

Groupoids, Steinberg Algebra, Twisted Steinberg Algebra, Non-twisted Steinberg Algebra

Abstract

This study introduces an ample Hausdorff groupoid A^R extracted from an ample Hausdorff groupoid G and a unital commutative ring R; a Hausdorff groupoid D which is the discrete twist over A^R. In the groupoid C*-algebra perspective, when R=C there is an isomorphism between the non-twisted groupoid C*-algebra (C(G)) and the twisted groupoid C*-algebra (C(A^R;D)). However, in this paper, in a purely algebraic setting, the non-twisted Steinberg algebra (AR(G)) and the twisted Steinberg algebra (AR(D;A^R)) are non-isomorphic.

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Published

2024-01-31

Issue

Section

Nonlinear Analysis

How to Cite

On the Construction of a Groupoid from an Ample Hausdorff Groupoid with Twisted Steinberg Algebra not Isomorphic to its Non-twisted Steinberg Algebra. (2024). European Journal of Pure and Applied Mathematics, 17(1), 519-545. https://doi.org/10.29020/nybg.ejpam.v17i1.5051