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Silvestrov, Sergei, ProfessorORCID iD iconorcid.org/0000-0003-4554-6528
Alternative names
Publications (10 of 271) Show all publications
Nazir, T. & Silvestrov, S. (2024). Common Attractors for Generalized F-Iterated Function Systems in G-Metric Spaces. Fractal and Fractional, 8(6), Article ID 346.
Open this publication in new window or tab >>Common Attractors for Generalized F-Iterated Function Systems in G-Metric Spaces
2024 (English)In: Fractal and Fractional, ISSN 2504-3110, Vol. 8, no 6, article id 346Article in journal (Refereed) Published
Abstract [en]

In this paper, we study the generalized F-iterated function system in G-metric space. Several results of common attractors of generalized iterated function systems obtained by using generalized F-Hutchinson operators are also established. We prove that the triplet of F-Hutchinson operators defined for a finite number of general contractive mappings on a complete G-metric space is itself a generalized F-contraction mapping on a space of compact sets. We also present several examples in 2-D and 3-D for our results.

Place, publisher, year, edition, pages
MDPI, 2024
Keywords
common attractor, common fixed point, F-Hutchinson operator, F-iterated function system, G-metric space
National Category
Mathematics
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-68002 (URN)10.3390/fractalfract8060346 (DOI)001257479300001 ()2-s2.0-85196875977 (Scopus ID)
Available from: 2024-07-03 Created: 2024-07-03 Last updated: 2024-07-14Bibliographically approved
Ma, T., Makhlouf, A. & Silvestrov, S. (2024). Curved 𝒪-operator systems. Communications in Algebra, 52(12), 5186-5202
Open this publication in new window or tab >>Curved 𝒪-operator systems
2024 (English)In: Communications in Algebra, ISSN 0092-7872, E-ISSN 1532-4125, Vol. 52, no 12, p. 5186-5202Article in journal (Refereed) Published
Abstract [en]

In this paper, we introduce the notion of curved 𝒪-operator systems as a generalization of T. Brzeziński’s (curved) Rota-Baxter systems, and then investigate their relations with 𝒪-operator systems, (tri)dendriform systems, pre-Lie algebras, associative Yang-Baxter pairs and quasitriangular covariant bialgebras.

Keywords
𝒪-operator system, associative Yang-Baxter pair, (tri)dendriform system
National Category
Algebra and Logic
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-68221 (URN)10.1080/00927872.2024.2367168 (DOI)2-s2.0-85198639808 (Scopus ID)
Available from: 2024-08-22 Created: 2024-08-22 Last updated: 2024-10-31Bibliographically approved
Djinja, D., Silvestrov, S. & Tumwesigye, A. B. (2024). Linear integral operators on Lp spaces representing polynomial covariance type commutation relations. Afrika Matematika, 35(1), Article ID 18.
Open this publication in new window or tab >>Linear integral operators on Lp spaces representing polynomial covariance type commutation relations
2024 (English)In: Afrika Matematika, ISSN 1012-9405, E-ISSN 2190-7668, Vol. 35, no 1, article id 18Article in journal (Refereed) Published
Abstract [en]

In this work, we present methods for constructing representations of polynomial covariance type commutation relations AB=BF(A) by linear integral operators in Banach spaces Lp. We derive necessary and sufficient conditions on the kernel functions for the integral operators to satisfy the covariance type commutation relation for general polynomials F, as well as for important cases, when F is arbitrary affine or quadratic polynomial, or arbitrary monomial of any degree. Using the obtained general conditions on the kernels, we construct concrete examples of representations of the covariance type commutation relations by integral operators on Lp. Also, we derive useful general reordering formulas for the integral operators representing the covariance type commutation relations, in terms of the kernel functions.

Keywords
Integral operators, Covariance commutation relations
National Category
Mathematical Analysis
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-65358 (URN)10.1007/s13370-023-01153-6 (DOI)001137951800001 ()2-s2.0-85181759228 (Scopus ID)
Funder
Sida - Swedish International Development Cooperation Agency
Available from: 2024-01-17 Created: 2024-01-17 Last updated: 2024-07-14Bibliographically approved
Kitouni, A. & Silvestrov, S. (2024). On Properties and Classification of a Class of 4-Dimensional 3-Hom-Lie Algebras with a Nilpotent Twisting Map. AXIOMS, 13(6), Article ID 373.
Open this publication in new window or tab >>On Properties and Classification of a Class of 4-Dimensional 3-Hom-Lie Algebras with a Nilpotent Twisting Map
2024 (English)In: AXIOMS, ISSN 2075-1680, Vol. 13, no 6, article id 373Article in journal (Refereed) Published
Abstract [en]

The aim of this work is to investigate the properties and classification of an interesting class of 4-dimensional 3-Hom-Lie algebras with a nilpotent twisting map alpha and eight structure constants as parameters. Derived series and central descending series are studied for all algebras in this class and are used to divide it into five non-isomorphic subclasses. The levels of solvability and nilpotency of the 3-Hom-Lie algebras in these five classes are obtained. Building upon that, all algebras of this class are classified up to Hom-algebra isomorphism. Necessary and sufficient conditions for multiplicativity of general (n+1)-dimensional n-Hom-Lie algebras, as well as for algebras in the considered class, are obtained in terms of the structure constants and the twisting map. Furthermore, for some algebras in this class, it is determined whether the terms of the derived and central descending series are weak subalgebras, Hom-subalgebras, weak ideals, or Hom-ideals.

Place, publisher, year, edition, pages
MDPI, 2024
Keywords
Hom-algebra, n-Hom-Lie algebra, classification
National Category
Algebra and Logic
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-68043 (URN)10.3390/axioms13060373 (DOI)001254998800001 ()
Available from: 2024-07-12 Created: 2024-07-12 Last updated: 2024-07-14Bibliographically approved
Nazir, T., Abbas, M. & Silvestrov, S. (2024). Perov type T-contractive mappings on cone b-metric spaces with generalized c-distance. Afrika Matematika, 35(3), Article ID 69.
Open this publication in new window or tab >>Perov type T-contractive mappings on cone b-metric spaces with generalized c-distance
2024 (English)In: Afrika Matematika, ISSN 1012-9405, E-ISSN 2190-7668, Vol. 35, no 3, article id 69Article in journal (Refereed) Published
Abstract [en]

The aim of this paper is to study the sufficient conditions for the existence of fixed points of Perov type T-contractive mappings in the setup of complete cone b-metric space associated with generalized c-distance. Some examples are presented to support our main results and concepts defined herein. The results proved in the paper extend and generalize various well known results in the existing literature.

Place, publisher, year, edition, pages
SPRINGER HEIDELBERG, 2024
Keywords
Fixed point, Perov type T-contraction, c-distance, Cone b-metric space
National Category
Mathematical Analysis
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-68210 (URN)10.1007/s13370-024-01210-8 (DOI)001291682300001 ()2-s2.0-85201257160 (Scopus ID)
Available from: 2024-08-21 Created: 2024-08-21 Last updated: 2024-08-28Bibliographically approved
Laraiedh, I. & Silvestrov, S. (2023). Admissible Hom-Novikov-Poisson and Hom-Gelfand-Dorfman Color Hom-Algebras. In: Sergei Silvestrov, Anatoliy Malyarenko (Ed.), Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2. Paper presented at International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019 (pp. 613-659). Springer
Open this publication in new window or tab >>Admissible Hom-Novikov-Poisson and Hom-Gelfand-Dorfman Color Hom-Algebras
2023 (English)In: Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2 / [ed] Sergei Silvestrov, Anatoliy Malyarenko, Springer , 2023, p. 613-659Conference paper, Published paper (Refereed)
Abstract [en]

The main feature of color Hom-algebras is that the identities defining the structures are twisted by even linear maps. The purpose of this paper is to introduce and give some constructions of admissible Hom-Novikov-Poisson color Hom-algebras and Hom-Gelfand-Dorfman color Hom-algebras. Their bimodules and matched pairs are defined and the relevant properties and theorems are given. Also, the connections between Hom-Novikov-Poisson color Hom-algebras and Hom-Gelfand-Dorfman color Hom-algebras are proved. Furthermore, we show that the class of admissible Hom-Novikov-Poisson color Hom-algebras is closed under tensor product.

Place, publisher, year, edition, pages
Springer, 2023
Series
Springer Proceedings in Mathematics and Statistics, ISSN 21941009 ; 426
Keywords
BiHom-Lie algebra, BiHom-Lie derivation, Derivation, Centroid
National Category
Algebra and Logic
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-64599 (URN)10.1007/978-3-031-32009-5_22 (DOI)2-s2.0-85174438979 (Scopus ID)9783031320088 (ISBN)
Conference
International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019
Available from: 2023-10-30 Created: 2023-10-30 Last updated: 2023-12-27Bibliographically approved
Arfa, A., Saadaoui, N. & Silvestrov, S. (2023). Classification, Centroids and Derivations of Two-Dimensional Hom-Leibniz Algebras. In: Sergei Silvestrov, Anatoliy Malyarenko (Ed.), Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2. Paper presented at International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019 (pp. 33-60). Springer
Open this publication in new window or tab >>Classification, Centroids and Derivations of Two-Dimensional Hom-Leibniz Algebras
2023 (English)In: Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2 / [ed] Sergei Silvestrov, Anatoliy Malyarenko, Springer , 2023, p. 33-60Conference paper, Published paper (Refereed)
Abstract [en]

Several recent results concerning Hom-Leibniz algebra are reviewed, the notion of symmetric Hom-Leibniz superalgebra is introduced and some properties are obtained. Classification of 2-dimensional Hom-Leibniz algebras is provided. Centroids and derivations of multiplicative Hom-Leibniz algebras are considered including the detailed study of 2-dimensional Hom-Leibniz algebras.

Place, publisher, year, edition, pages
Springer, 2023
Series
Springer Proceedings in Mathematics and Statistics, ISSN 21941009 ; 426
Keywords
Hom-Lie superalgebra, Hom-Leibniz superalgebra, Centroid, Derivation
National Category
Algebra and Logic
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-64617 (URN)10.1007/978-3-031-32009-5_3 (DOI)2-s2.0-85174444980 (Scopus ID)9783031320088 (ISBN)
Conference
International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019
Available from: 2023-10-26 Created: 2023-10-26 Last updated: 2023-12-28Bibliographically approved
Armakan, A. & Silvestrov, S. (2023). Color Hom-Lie Algebras, Color Hom-Leibniz Algebras and Color Omni-Hom-Lie Algebras. In: Sergei Silvestrov, Anatoliy Malyarenko (Ed.), Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2. Paper presented at International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019 (pp. 61-79). Springer
Open this publication in new window or tab >>Color Hom-Lie Algebras, Color Hom-Leibniz Algebras and Color Omni-Hom-Lie Algebras
2023 (English)In: Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2 / [ed] Sergei Silvestrov, Anatoliy Malyarenko, Springer , 2023, p. 61-79Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, the representations of color hom-Lie algebras have been reviewed and the existence of a series of coboundary operators is demonstrated. Moreover, the notion of a color omni-hom-Lie algebra associated to a linear space and an even invertible linear map have been introduced. In addition, characterization method for regular color hom-Lie algebra structures on a linear space is examined and it is shown that the underlying algebraic structure of the color omni-hom-Lie algebra is a color hom-Leibniz a algebra.

Place, publisher, year, edition, pages
Springer, 2023
Series
Springer Proceedings in Mathematics and Statistics, ISSN 21941009 ; 426
Keywords
Color Hom-Lie algebras, Color Omni-Hom-Lie algebra, Color Hom-Leibniz algebra
National Category
Algebra and Logic
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-64613 (URN)10.1007/978-3-031-32009-5_4 (DOI)2-s2.0-85174444260 (Scopus ID)9783031320088 (ISBN)
Conference
International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019
Available from: 2023-10-27 Created: 2023-10-27 Last updated: 2023-12-28Bibliographically approved
Silvestrov, S. & Tumwesigye, A. B. (2023). Commutants in Crossed Products for Piecewise Constant Function Algebras Related to Multiresolution Analysis. In: Sergei Silvestrov, Anatoliy Malyarenko (Ed.), Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2. Paper presented at International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019 (pp. 709-724). Springer
Open this publication in new window or tab >>Commutants in Crossed Products for Piecewise Constant Function Algebras Related to Multiresolution Analysis
2023 (English)In: Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2 / [ed] Sergei Silvestrov, Anatoliy Malyarenko, Springer , 2023, p. 709-724Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we consider crossed product algebras of piecewise constant function algebras on the real line that arise in multiresolution analysis. Such algebras form an increasing sequence of algebras of functions on the real line. We derive conditions under which these algebras are invariant under a bijection on the real line, in which case we get an increasing sequence of crossed product algebras. We then give a comparison of commutants (centralizers) in a number of cases.

Place, publisher, year, edition, pages
Springer, 2023
Series
Springer Proceedings in Mathematics and Statistics, ISSN 21941009 ; 426
Keywords
Crossed product algebra, Multiresolution analysis, Commutant
National Category
Algebra and Logic
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-64594 (URN)10.1007/978-3-031-32009-5_25 (DOI)2-s2.0-85174444965 (Scopus ID)9783031320088 (ISBN)
Conference
International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019
Available from: 2023-10-30 Created: 2023-10-30 Last updated: 2023-12-27Bibliographically approved
Harrathi, F., Hounkonnou, M. N., Mabrouk, S. & Silvestrov, S. (2023). Construction and Characterization of n-Ary Hom-Bialgebras and n-Ary Infinitesimal Hom-Bialgebras. In: Sergei Silvestrov, Anatoliy Malyarenko (Ed.), Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2. Paper presented at International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019 (pp. 399-428). Springer, 426
Open this publication in new window or tab >>Construction and Characterization of n-Ary Hom-Bialgebras and n-Ary Infinitesimal Hom-Bialgebras
2023 (English)In: Non-commutative and Non-associative Algebra and Analysis Structures: SPAS 2019, Västerås, Sweden, September 30 - October 2 / [ed] Sergei Silvestrov, Anatoliy Malyarenko, Springer , 2023, Vol. 426, p. 399-428Conference paper, Published paper (Refereed)
Abstract [en]

Constructions of n-ary bialgebras and n-ary infinitesimal bialgebras of associative type and their hom-analogs, generalizing the hom-bialgebras and infinitesimal hom-bialgebras are investigated. Main algebraic characteristics of n-ary totally, n-ary weak totally, n-ary partially and n-ary alternate partially associative algebras and bialgebras, and their hom-counterparts are described. Particular cases of ternary algebras are given as illustration.

Place, publisher, year, edition, pages
Springer, 2023
Series
Springer Proceedings in Mathematics and Statistics, ISSN 21941009 ; 426
Keywords
Hom-associative algebras, Infinitesimal Hom-bialgebras, n-ary Hom-bialgebras of associative type, n-ary infinitesimal Hom-bialgebras of associative type
National Category
Algebra and Logic
Research subject
Mathematics/Applied Mathematics
Identifiers
urn:nbn:se:mdh:diva-64611 (URN)10.1007/978-3-031-32009-5_16 (DOI)2-s2.0-85174450339 (Scopus ID)9783031320088 (ISBN)
Conference
International Conference on Stochastic Processes and Algebraic Structures—From Theory Towards Applications, SPAS 2019, Västerås, Sweden, 30 September - 2 October 2019
Available from: 2023-10-27 Created: 2023-10-27 Last updated: 2023-12-27Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-4554-6528