A Class of Non-Hopf Bi-Frobenius Algebras Generated by <i>n</i> Elements

Bi-Frobenius algebras are a class of Frobenius algebras and Frobenius coalgebras with some compatible conditions. In this paper, we construct a class of bi-Frobenius algebras generated by <i>n</i> elements on graded algebra <inline-formula><math xmlns="http://www.w3.org/199...

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Main Authors: Zhan Fa, Yanhua Wang
Format: Article
Language:English
Published: MDPI AG 2025-04-01
Series:Mathematics
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Online Access:https://www.mdpi.com/2227-7390/13/8/1357
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author Zhan Fa
Yanhua Wang
author_facet Zhan Fa
Yanhua Wang
author_sort Zhan Fa
collection DOAJ
description Bi-Frobenius algebras are a class of Frobenius algebras and Frobenius coalgebras with some compatible conditions. In this paper, we construct a class of bi-Frobenius algebras generated by <i>n</i> elements on graded algebra <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>A</mi><mo>.</mo></mrow></semantics></math></inline-formula> The comultiplication and counit are defined via a permutation <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>π</mi></semantics></math></inline-formula> on <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>A</mi><mo>,</mo></mrow></semantics></math></inline-formula> such that <i>A</i> becomes a bi-Frobenius algebra. For any <i>n</i>, these bi-Frobenius algebras are neither Hopf algebras nor S-type bi-Frobenius algebras.
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spelling doaj-art-382cb74afd564f808499e89e637e3beb2025-08-20T02:18:04ZengMDPI AGMathematics2227-73902025-04-01138135710.3390/math13081357A Class of Non-Hopf Bi-Frobenius Algebras Generated by <i>n</i> ElementsZhan Fa0Yanhua Wang1School of Mathematics, Shanghai University of Finance and Economics, Shanghai 200433, ChinaSchool of Mathematics, Shanghai Key Laboratory of Financial Information Technology, Shanghai University of Finance and Economics, Shanghai 200433, ChinaBi-Frobenius algebras are a class of Frobenius algebras and Frobenius coalgebras with some compatible conditions. In this paper, we construct a class of bi-Frobenius algebras generated by <i>n</i> elements on graded algebra <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>A</mi><mo>.</mo></mrow></semantics></math></inline-formula> The comultiplication and counit are defined via a permutation <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>π</mi></semantics></math></inline-formula> on <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>A</mi><mo>,</mo></mrow></semantics></math></inline-formula> such that <i>A</i> becomes a bi-Frobenius algebra. For any <i>n</i>, these bi-Frobenius algebras are neither Hopf algebras nor S-type bi-Frobenius algebras.https://www.mdpi.com/2227-7390/13/8/1357Hopf algebrasFrobenius algebrasFrobenius coalgebrasbi-Frobenius algebras
spellingShingle Zhan Fa
Yanhua Wang
A Class of Non-Hopf Bi-Frobenius Algebras Generated by <i>n</i> Elements
Mathematics
Hopf algebras
Frobenius algebras
Frobenius coalgebras
bi-Frobenius algebras
title A Class of Non-Hopf Bi-Frobenius Algebras Generated by <i>n</i> Elements
title_full A Class of Non-Hopf Bi-Frobenius Algebras Generated by <i>n</i> Elements
title_fullStr A Class of Non-Hopf Bi-Frobenius Algebras Generated by <i>n</i> Elements
title_full_unstemmed A Class of Non-Hopf Bi-Frobenius Algebras Generated by <i>n</i> Elements
title_short A Class of Non-Hopf Bi-Frobenius Algebras Generated by <i>n</i> Elements
title_sort class of non hopf bi frobenius algebras generated by i n i elements
topic Hopf algebras
Frobenius algebras
Frobenius coalgebras
bi-Frobenius algebras
url https://www.mdpi.com/2227-7390/13/8/1357
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