Search results for "Number"

showing 10 items of 3939 documents

On existence of joins and meets under the star order in strong Rickart rings

2021

Pure mathematicsAlgebra and Number TheoryOrder (business)JoinsStar (graph theory)MathematicsLinear and Multilinear Algebra
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Some coincidence and periodic points results in a metric space endowed with a graph and applications

2015

The purpose of this paper is to obtain some coincidence and periodic points results for generalized $F$-type contractions in a metric space endowed with a graph. Some examples are given to illustrate the new theory. Then, we apply our results to establishing the existence of solution for a certain type of nonlinear integral equation.

Pure mathematicsAlgebra and Number TheoryPeriodic sequencePeriodic pointCoincidence point nonlinear integral equation periodic point.Type (model theory)TopologyNonlinear integral equationnonlinear integral equationCoincidenceCoincidence pointMetric spaceperiodic point54H25Settore MAT/05 - Analisi MatematicaGraph (abstract data type)05C40Coincidence pointAnalysis47H10Mathematics
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Elementary hypergeometric functions, Heun functions, and moments of MKZ operators

2019

We consider some hypergeometric functions and prove that they are elementary functions. Consequently, the second order moments of Meyer-Konig and Zeller type operators are elementary functions. The higher order moments of these operators are expressed in terms of elementary functions and polylogarithms. Other applications are concerned with the expansion of certain Heun functions in series or finite sums of elementary hypergeometric functions.

Pure mathematicsAlgebra and Number TheorySeries (mathematics)Applied Mathematics010102 general mathematicsMathematics::Classical Analysis and ODEsNumerical Analysis (math.NA)Type (model theory)33C05 33C90 33E30 41A3601 natural sciencesSecond order moments010101 applied mathematicsComputational MathematicsMathematics - Classical Analysis and ODEsClassical Analysis and ODEs (math.CA)FOS: MathematicsElementary functionHigher order momentsGeometry and TopologyMathematics - Numerical Analysis0101 mathematicsHypergeometric functionAnalysisMathematics
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On partially saturated formations of finite groups

2007

Various types of partially saturated formations and connections between them are considered. It is shown that partially saturated formations can be characterized as classes of finite groups with generalized central series. A theorem on the decomposition of an FG-module into a sum of two submodules with special properties is proved.Bibliography: 26 titles.

Pure mathematicsAlgebra and Number TheorySeries (mathematics)Decomposition (computer science)GeometryPartially saturatedMathematicsSbornik: Mathematics
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Fixed points for asymptotic contractions of integral Meir-Keeler type

2012

In this paper we introduce the notion of asymptotic contraction of integral Meir-Keeler type on a metric space and we prove a theorem which ensures existence and uniqueness of fixed points for such contractions. This result generalizes some recent results in the literature.

Pure mathematicsAlgebra and Number TheorySettore MAT/05 - Analisi MatematicaAsymptotic contractions of integral typeContractions of Meir-Keeler type.Fixed pointType (model theory)Fixed pointAnalysisMathematicsJournal of Nonlinear Sciences and Applications
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A fixed point theorem for a Meir-Keeler type contraction through rational expression

2013

In this paper, we establish a new fixed point theorem for a Meir-Keeler type contraction through rational expression. The presented theorem is an extension of the result of Dass and Gupta (1975). Some applications to contractions of integral type are given.

Pure mathematicsAlgebra and Number TheorySettore MAT/05 - Analisi MatematicaFixed-point theoremContraction (operator theory)Fixed point Meir-Keeler type contraction Rational expression Contraction of integral type.AnalysisMathematicsJournal of Nonlinear Sciences and Applications
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Local Spectral Theory for R and S Satisfying RnSRn = Rj

2020

In this paper, we analyze local spectral properties of operators R,S and RS which satisfy the operator equations RnSRn=Rj and SnRSn=Sj for same integers j&ge

Pure mathematicsAlgebra and Number TheorySpectral theoryDunford’s property (C) and property (β)Local spectral subspacesLogiclcsh:Mathematics010102 general mathematicsSpectral propertieslcsh:QA1-93901 natural sciences010101 applied mathematicsTheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGESOperator (computer programming)Transmission (telecommunications)Settore MAT/05 - Analisi MatematicaDunford’s property (<i>C</i>) and property (<i>β</i>)Data_FILESDrazin invertible operatorsGeometry and Topology0101 mathematicsMathematical PhysicsAnalysisMathematicsAxioms
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Linear characters of Sylow subgroups

2003

Pure mathematicsAlgebra and Number TheorySylow theoremsMathematicsJournal of Algebra
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C0-semigroups norm continuous at infinity

1996

Pure mathematicsAlgebra and Number TheoryUniform normNorm (mathematics)Infinity LaplacianVanish at infinityMathematicsSemigroup Forum
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CQ*-Algebras of Operators and Application to Quantum Models

2000

C*-algebras constitute, as known, the cornerstones of the Haag-Kastler [1] algebraic approach to quantum systems, with infinitely many degrees of freedom: one usually starts, in fact, with associating to each bounded region V of the configuration space of the system the C*-algebra A v of local observables in V. The uniform completion A of the algebra A0 generated by the Av’s is then considered as the C*-algebra of observables of the system.

Pure mathematicsBounded functionDegrees of freedomMathematical analysisObservableConfiguration spaceAlgebraic numberAlgebra over a fieldQuantumMathematics
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