Research Article

Cat$^1$-Objects in the Category of Crossed Modules

Volume: 18 Number: 3 October 13, 2026

Cat$^1$-Objects in the Category of Crossed Modules

Abstract

The main aim of this study is to investigate cat$^1$-objects within the category of crossed modules, which we call cat$^1$-crossed modules, and to characterize these structures systematically. First, fundamental notions from category theory and crossed modules are presented, followed by the definition and properties of cat$^1$-groups. Subsequently, cat$^1$-crossed modules are introduced in the category of crossed modules, and their homotopical and algebraic properties are explored. Furthermore, natural equivalences are studied in detail between cat$^1$-crossed modules and other algebraic structures such as crossed squares, cat$^2$-groups, and double group-groupoids. The results obtained represent a significant step toward a deeper understanding of higher-dimensional algebraic models.

Keywords

References

  1. Alemdar, N., Temel, S., Group-2-groupoids and 2G-crossed modules, Hacet. J. Math. Stat., 48(5)(2019), 1388–1397.
  2. Akız, H.F., Alemdar, N., Mucuk, O., S¸ ahan, T., Coverings of internal groupoids and crossed modules in the category of groups with operations, Georgian Math. J., 20(2)(2013), 223–238.
  3. Ege Arslan, U., Soylu Yılmaz, E., On internal categories in higher dimensional groups, JUM, 5(2)(2022), 129–138.
  4. Arvasi, Z., Ulualan, E., Homotopical aspects of commutative algebras I: freeness conditions for crossed squares, J. Homotopy Relat. Struct., 10(2015), 495–518.
  5. Aytekin, A., Categorical structures of Lie Rinehart crossed module, Turk. J. Math., 43(1)(2019), 511–522.
  6. Aytekin, A., Emir, K., Colimits of crossed modules in modified categories of interest, Electron. Res. Arch., 28(3)(2020), 1227–1238.
  7. Aytekin, A., (Co)Limits of Hom-Lie crossed module, Turk. J. Math., 45(2019), 2140–2153.
  8. Brown, R., Higgins, P.J., On the algebra of cubes, J. Pure Appl. Algebra, 21(1978), 233–260.

Details

Primary Language

English

Subjects

Category Theory, K Theory, Homological Algebra

Journal Section

Research Article

Publication Date

October 13, 2026

Submission Date

December 1, 2025

Acceptance Date

March 27, 2026

Published in Issue

Year 2026 Volume: 18 Number: 3

APA
Şahan, T., & Berberoğlu, B. (2026). Cat$^1$-Objects in the Category of Crossed Modules. Turkish Journal of Mathematics and Computer Science, 18(3), 722-734. https://doi.org/10.47000/tjmcs.1833989
AMA
1.Şahan T, Berberoğlu B. Cat$^1$-Objects in the Category of Crossed Modules. TJMCS. 2026;18(3):722-734. doi:10.47000/tjmcs.1833989
Chicago
Şahan, Tunçar, and Bestami Berberoğlu. 2026. “Cat$^1$-Objects in the Category of Crossed Modules”. Turkish Journal of Mathematics and Computer Science 18 (3): 722-34. https://doi.org/10.47000/tjmcs.1833989.
EndNote
Şahan T, Berberoğlu B (October 1, 2026) Cat$^1$-Objects in the Category of Crossed Modules. Turkish Journal of Mathematics and Computer Science 18 3 722–734.
IEEE
[1]T. Şahan and B. Berberoğlu, “Cat$^1$-Objects in the Category of Crossed Modules”, TJMCS, vol. 18, no. 3, pp. 722–734, Oct. 2026, doi: 10.47000/tjmcs.1833989.
ISNAD
Şahan, Tunçar - Berberoğlu, Bestami. “Cat$^1$-Objects in the Category of Crossed Modules”. Turkish Journal of Mathematics and Computer Science 18/3 (October 1, 2026): 722-734. https://doi.org/10.47000/tjmcs.1833989.
JAMA
1.Şahan T, Berberoğlu B. Cat$^1$-Objects in the Category of Crossed Modules. TJMCS. 2026;18:722–734.
MLA
Şahan, Tunçar, and Bestami Berberoğlu. “Cat$^1$-Objects in the Category of Crossed Modules”. Turkish Journal of Mathematics and Computer Science, vol. 18, no. 3, Oct. 2026, pp. 722-34, doi:10.47000/tjmcs.1833989.
Vancouver
1.Tunçar Şahan, Bestami Berberoğlu. Cat$^1$-Objects in the Category of Crossed Modules. TJMCS. 2026 Oct. 1;18(3):722-34. doi:10.47000/tjmcs.1833989