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Growth of Solutions of a Class of Linear Differential Equations Near a Singular Point 一类线性微分方程奇异点附近解的增长性
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.187c
Samir Cherief, S. Hamouda
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引用次数: 1
On the Simplicial Complexes Associated to the Cyclotomic Polynomial 关于环形多项式的简单配合物
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.309k
A. Kostic
{"title":"On the Simplicial Complexes Associated to the Cyclotomic Polynomial","authors":"A. Kostic","doi":"10.46793/kgjmat2302.309k","DOIUrl":"https://doi.org/10.46793/kgjmat2302.309k","url":null,"abstract":"Musiker and Reiner in [9] studied coefficients of cyclotomic polynomial in terms of topology of associated simplicial complexes. They determined homotopy type of associated complexes for all cyclotomic polynomials, except for cyclotomic polynomials whose degree is a product of three prime numbers. Using discrete Morse theory for simplicial complexes we partially answer a question posed by the two authors regarding homotopy type of the associated complexes when degree of the cyclotomic polynomial is a product of three prime numbers.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47619477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Graphs with at most Four Seidel Eigenvalues 具有最多四个Seidel特征值的图
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.173g
M. Ghorbani, M. Hakimi-Nezhaad, Borong Zhou
{"title":"Graphs with at most Four Seidel Eigenvalues","authors":"M. Ghorbani, M. Hakimi-Nezhaad, Borong Zhou","doi":"10.46793/kgjmat2302.173g","DOIUrl":"https://doi.org/10.46793/kgjmat2302.173g","url":null,"abstract":"","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44805262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Kontsevich Graphons Kontsevich图
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.213s
Ali Shojaei-Fard
{"title":"Kontsevich Graphons","authors":"Ali Shojaei-Fard","doi":"10.46793/kgjmat2302.213s","DOIUrl":"https://doi.org/10.46793/kgjmat2302.213s","url":null,"abstract":"The article applies graph functions to extend the Kontsevich differential graded Lie algebraic formalism (in Deformation Quantization) to infinite Kontsevich graphs on the basis of the Connes-Kreimer Hopf algebraic renormalization and the theory of noncommutative differential geometry.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45967816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Compositions of Cospectrality Graphs of Smith Graphs Smith图的同谱图的组成
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.271c
D. Cvetkovic, Marija Jerotijević
{"title":"Compositions of Cospectrality Graphs of Smith Graphs","authors":"D. Cvetkovic, Marija Jerotijević","doi":"10.46793/kgjmat2302.271c","DOIUrl":"https://doi.org/10.46793/kgjmat2302.271c","url":null,"abstract":"Graphs whose spectrum belongs to the interval [−2, 2] are called Smith graphs. Vertices of the cospectrality graph C(H) of a Smith graph H are all graphs cospectral with H with two vertices adjacent if there exists a certain transformation transforming one to another. We study how the cospectrality graph of the union of two Smith graphs can be composed starting from cospectrality graphs of starting graphs.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45822073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Generalized Mixed Type Bernoulli-Gegenbauer Polynomials 广义混合型Bernoulli-Gegenbauer多项式
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.245q
Yamilet Quintana
{"title":"Generalized Mixed Type Bernoulli-Gegenbauer Polynomials","authors":"Yamilet Quintana","doi":"10.46793/kgjmat2302.245q","DOIUrl":"https://doi.org/10.46793/kgjmat2302.245q","url":null,"abstract":"The generalized mixed type Bernoulli-Gegenbauer polynomials of order α >−1/2 are special polynomials obtained by use of the generating function method. These polynomials represent an interesting mixture between two classes of special functions, namely generalized Bernoulli polynomials and Gegenbauer polynomials. The main purpose of this paper is to discuss some of their algebraic and analytic properties.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49010907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Lightlike Hypersurfaces in Semi-Riemmanian Manifolds Admitting Affine Conformal Vector Fields 允许仿射共形向量场的半Riemanman流形中的类光超曲面
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.297s
S. Ssekajja
{"title":"Lightlike Hypersurfaces in Semi-Riemmanian Manifolds Admitting Affine Conformal Vector Fields","authors":"S. Ssekajja","doi":"10.46793/kgjmat2302.297s","DOIUrl":"https://doi.org/10.46793/kgjmat2302.297s","url":null,"abstract":"Lightlike hypersurfaces with integrable screen distributions are very important as far as lightlike geometry is concerned. They include, among others, screen conformal and screen totally umbilic ones. In this paper, we show that any lightlike hypersurface of a semi-Riemannian manifold admitting a certain closed affine conformal vector field has an integrable screen distribution. Several examples are furnished in support of the main results.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46611726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Convergence and Difference Estimates Between Mastroianni and Gupta Operators Mastroianni算子和Gupta算子的收敛性和差分估计
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.259d
Neha Deo, N. Deo
{"title":"Convergence and Difference Estimates Between Mastroianni and Gupta Operators","authors":"Neha Deo, N. Deo","doi":"10.46793/kgjmat2302.259d","DOIUrl":"https://doi.org/10.46793/kgjmat2302.259d","url":null,"abstract":"Gupta operators are a modified form of Srivastava-Gupta operators and we are concerned about investigating the difference of operators and we estimate the difference of Mastroianni operators with Gupta operators in terms of modulus of continuity of first order. We also study the weighted approximation of functions and obtain the rate of convergence with the help of the moduli of continuity as well as Peetre’s K-functional of Gupta operators.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43437785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bell Graphs are Determined by their Laplacian Spectra Bell图是由它们的拉普拉斯谱决定的
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.203a
A. Z. Abdian
{"title":"Bell Graphs are Determined by their Laplacian Spectra","authors":"A. Z. Abdian","doi":"10.46793/kgjmat2302.203a","DOIUrl":"https://doi.org/10.46793/kgjmat2302.203a","url":null,"abstract":"A graph G is said to be determined by the spectrum of its Laplacian spectrum (DLS, for short) if every graph with the same spectrum is isomorphic to G. An ∞-graph is a graph consisting of two cycles with just a vertex in common. Consider the coalescence of an ∞-graph and the star graph K1,s, with respect to their unique maximum degree. We call this a bell graph. In this paper, we aim to prove that all bell graphs are DLS.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48529274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
SOME L1-BICONSERVATIVE LORENTZIAN HYPERSURFACES IN THE LORENTZ-MINKOWSKI SPACES 洛伦兹-闵可夫斯基空间中的一些11 -双保守洛伦兹超曲面
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2023-04-01 DOI: 10.46793/kgjmat2302.229p
F. Pashaie
{"title":"SOME L1-BICONSERVATIVE LORENTZIAN HYPERSURFACES IN THE LORENTZ-MINKOWSKI SPACES","authors":"F. Pashaie","doi":"10.46793/kgjmat2302.229p","DOIUrl":"https://doi.org/10.46793/kgjmat2302.229p","url":null,"abstract":"","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41991885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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