Geodesic
Certain partitions on a set and their applications to different classes of graded algebras
Communications in Mathematics, Tome 29 (2021) no. 2, pp. 243-254
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Let $({\mathfrak A} , {\epsilon }_{u})$ and $({\mathfrak B} , {\epsilon }_{b})$ be two pointed sets. Given a family of three maps ${\mathcal F}=\{f_1\colon {{\mathfrak A} } \to {\mathfrak A} ; f_2\colon {{\mathfrak A} } \times {\mathfrak A} \to {\mathfrak A} ; f_3\colon {{\mathfrak A} } \times {\mathfrak A} \to {\mathfrak B} \}$, this family provides an adequate decomposition of ${\mathfrak A} \setminus \{ \epsilon _u \}$ as the orthogonal disjoint union of well-described ${\mathcal F}$-invariant subsets. This decomposition is applied to the structure theory of graded involutive algebras, graded quadratic algebras and graded weak $H^*$-algebras.
Let $({\mathfrak A} , {\epsilon }_{u})$ and $({\mathfrak B} , {\epsilon }_{b})$ be two pointed sets. Given a family of three maps ${\mathcal F}=\{f_1\colon {{\mathfrak A} } \to {\mathfrak A} ; f_2\colon {{\mathfrak A} } \times {\mathfrak A} \to {\mathfrak A} ; f_3\colon {{\mathfrak A} } \times {\mathfrak A} \to {\mathfrak B} \}$, this family provides an adequate decomposition of ${\mathfrak A} \setminus \{ \epsilon _u \}$ as the orthogonal disjoint union of well-described ${\mathcal F}$-invariant subsets. This decomposition is applied to the structure theory of graded involutive algebras, graded quadratic algebras and graded weak $H^*$-algebras.
Classification : 03E75, 08A05, 16W50, 17A01, 17A45
Keywords: Set; application; graded algebra; involutive algebra; quadratic algebra; weak $H^*$-algebra; structure theory 
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Martín, Antonio J. Calderón; Dieme, Boubacar. Certain partitions on a set and their applications to different classes of graded algebras. Communications in Mathematics, Tome 29 (2021) no. 2, pp. 243-254. http://geodesic.mathdoc.fr/item/COMIM_2021_29_2_a6/

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