Spin Characters' Decomposition Matrices of S27, S28modulo, p=13

Ahmed H. Jassim; Saeed A. Taban

doi:10.30526/37.4.3360

Authors

Ahmed H. Jassim Department of Mathematics, College of Science, Basrah University , Basrah, Iraq. https://orcid.org/0000-0001-5581-8326
Saeed A. Taban Department of Mathematics, College of Science, Basrah University, Basrah, Iraq. https://orcid.org/0000-0003-2133-6817

DOI:

https://doi.org/10.30526/37.4.3360

Keywords:

Decomposition Matrix, Irreducible Modular Spin Character, projective character.

Abstract

In this study, when the field characteristic is 13, we calculate decomposition matrices for the spin characters and which are broken down into blocks, where the decomposition matrices are connected between irreducible spin characters and irreducible modular spin characters. The technique used in this study is -inducing, which produces projective characters for symmetric group by projecting 's character, and symmetric group by projecting 's character. We can find it by fixing all bar divisions, finding all irreducible spin characters for ( ), , and all irreducible modular spin characters for ( ), . In order to explore irreducible modular spin characteristics, general correlations and theorems will be discovered as a result of this research.

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