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Quasi-hereditary algebras with all standard modules being isomorphic to submodules of projective modules

  • Ming Fang and Jun Hu EMAIL logo
Published/Copyright: February 10, 2025

Abstract

Standard modules over quasi-hereditary algebras are by definition certain quotients of projective modules. In this article, we study when they can be realized as submodules of projective modules, a property enjoyed by Verma modules in the BGG category 𝒪 for a finite-dimensional complex semisimple Lie algebra and by quantum Weyl modules over quantized Schur algebras S ( n , r ) with n r .


Dedicated to Professor Steffen Koenig on the occasion of his 60th birthday



Communicated by Manfred Droste


Award Identifier / Grant number: 12171457

Award Identifier / Grant number: 12431002

Award Identifier / Grant number: 2020YFA0712600

Funding statement: The first author is supported by the National Key Research and Development Program of China (2020YFA0712600) and the National Natural Science Foundation of China (12171457), and the second author is supported by the National Natural Science Foundation of China (12431002).

Acknowledgements

The authors are grateful to the referee for all valuable suggestions.

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Received: 2023-06-11
Revised: 2024-12-03
Published Online: 2025-02-10
Published in Print: 2025-06-01

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