Results 11 to 20 of about 81 (67)

Inequalities via s−convexity and log −convexity

open access: yesTopological Algebra and its Applications, 2017
In this paper, we obtain some new inequalities for functions whose second derivatives’ absolute value is s−convex and log −convex. Also, we give some applications for numerical integration.
Akdemir Ahmet Ocak   +2 more
doaj   +1 more source

On common fixed and periodic points of commuting functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 21, Issue 2, Page 269-276, 1998., 1996
It is known that two commuting continuous functions on an interval need not have a common fixed point. It is not known if such two functions have a common periodic point. In this paper we first give some results in this direction. We then define a new contractive condition, under which two continuous functions must have a unique common fixed point.
Aliasghar Alikhani-Koopaei
wiley   +1 more source

A counter example on common periodic points of functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 21, Issue 4, Page 823-827, 1998., 1998
By a counter example we show that two continuous functions defined on a compact metric space satisfying a certain semi metric need not have a common periodic point.
Aliasghar Alikhani-Koopaei
wiley   +1 more source

A note on Merentes--Riesz bounded variation spaces

open access: yes, 2018
In this paper we introduce a function space with some generalization of bounded variation and study some of its properties, like embeddings, decompositions and others.
R. Castillo   +2 more
semanticscholar   +1 more source

On generalized Baskakov-Durrmeyer-Stancu type operators

open access: yesDemonstratio Mathematica, 2017
In this paper, we study some local approximation properties of generalized Baskakov-Durrmeyer-Stancu operators. First, we establish a recurrence relation for the central moments of these operators, then we obtain a local direct result in terms of the ...
Kumar Angamuthu Sathish   +2 more
doaj   +1 more source

On Euler harmonic identities for measures and error estimations

open access: yes, 2017
Some new approximations of functions are given by using generalized Euler identities involving real Borel measures and harmonic sequences of functions.
Ambroz Čivljak
semanticscholar   +1 more source

On companion of Ostrowski inequality for mappings whose first derivatives absolute value are convex with applications

open access: yes, 2012
Several inequalities for a companion of Ostrowski inequality for absolutely continuous mappings whose first derivatives absolute value are convex (resp. concave) are established.
M. Alomari, M. Özdemir, Havva Kavurmac
semanticscholar   +1 more source

Embedding of classes of functions with λ_φ-bounded variation into generalized Lipschitz classes

open access: yes, 2015
In this note, we obtain the sufficient and necessary condition for the embedding of the classes ΛφBV of functions with Λφ -bounded variation into the generalized Lipschitz classes Hω q , 1 q < ∞ .
Heping Wang
semanticscholar   +1 more source

Weighted Theorems on Fractional Integrals in the Generalized Hölder Spaces via Indices mω and Mω [PDF]

open access: yes, 2004
Mathematics Subject Classification: 26A16, 26A33, 46E15.There are known various statements on weighted action of one-dimensional and multidimensional fractional integration operators in spaces of continuous functions, such as weighted generalized Hölder ...
Samko, Natasha, Karapetyants, Nikolai
core  

Extreme non-differentiability of typical Lipschitz mappings

open access: yesForum of Mathematics, Sigma
We show that no matter what subset of a normed space is given, a typical 1-Lipschitz mapping into a Banach space is non-differentiable at a typical point of the set in a very strong sense: the set of partial limits of its derivative ratios, which is ...
Michael Dymond, Olga Maleva
doaj   +1 more source

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