Results 31 to 40 of about 930 (85)

Integrality theorems in the theory of topological strings [PDF]

open access: yes, 2009
We give a simplified derivation of the expression of instanton numbers and of mirror map in terms of Frobenius map on p-adic cohomology and use this expression to prove integrality theorems.
Aganagic   +29 more
core   +1 more source

ON A NEW CLASS OF MULTIVALUED WEAKLY PICARD OPERATORS ON COMPLETE METRIC SPACES

open access: yesTaiwanese Journal of Mathematics, 2015
In the present paper, the concept of nonlinear $F$-contraction formultivalued mappings in metric spaces is introduced and considering the new proof technique, which was used for single valued maps by Wardowski [D. Wardowski, Fixed points of a new type of contractive mappings in complete metric spaces, Fixed Point Theory Appl.
Altun, Ishak   +2 more
openaire   +2 more sources

Ulam-Hyers stability for partial differential inclusions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
Using the weakly Picard operator technique, we will present Ulam-Hyers stability results for integral inclusions of Fredholm and Volterra type and for the Darboux problem associated to a partial differential inclusion.
V. Lazar
doaj   +1 more source

Multivalued Problems, Orthogonal Mappings, and Fractional Integro‐Differential Equation

open access: yesJournal of Mathematics, Volume 2020, Issue 1, 2020., 2020
In this manuscript, we propose some sufficient conditions for the existence of solution for the multivalued orthogonal ℱ‐contraction mappings in the framework of orthogonal metric spaces. As a consequence of results, we obtain some interesting results.
R. K. Sharma   +2 more
wiley   +1 more source

Differential equations associated to Families of Algebraic Cycles [PDF]

open access: yes, 2008
We develop a theory of differential equations associated to families of algebraic cycles in higher Chow groups (i.e., motivic cohomology groups). This formalism is related to inhomogeneous Picard--Fuchs type differential equations.
del Angel, Pedro Luis   +1 more
core   +3 more sources

Approximation of the Fixed Point of Multivalued Quasi‐Nonexpansive Mappings via a Faster Iterative Process with Applications

open access: yesDiscrete Dynamics in Nature and Society, Volume 2020, Issue 1, 2020., 2020
In this paper, we approximate the fixed points of multivalued quasi‐nonexpansive mappings via a faster iterative process and propose a faster fixed‐point iterative method for finding the solution of two‐point boundary value problems. We prove analytically and with series of numerical experiments that the Picard–Ishikawa hybrid iterative process has the
Godwin Amechi Okeke   +3 more
wiley   +1 more source

Higher Order of Convergence with Multivalued Contraction Mappings

open access: yesJournal of Mathematics, Volume 2020, Issue 1, 2020., 2020
In this paper, we establish some theorems of fixed point on multivalued mappings satisfying contraction mapping by using gauge function. Furthermore, we use Q‐ and R‐order of convergence. Our main results extend many previous existing results in the literature.
Jia-Bao Liu   +5 more
wiley   +1 more source

Ulam-Hyers stability of fixed point equations for multivalued operators on KST spaces [PDF]

open access: yesSurveys in Mathematics and its Applications, 2014
In this paper we define the notions of Ulam-Hyers stability on KST spaces and cw-weakly Picard operator for the multivalued operators case in order to establish a relation between these.
Liliana Guran Manciu
doaj  

Conformal field theory of Painlev\'e VI [PDF]

open access: yes, 2012
Generic Painlev\'e VI tau function \tau(t) can be interpreted as four-point correlator of primary fields of arbitrary dimensions in 2D CFT with c=1. Using AGT combinatorial representation of conformal blocks and determining the corresponding structure ...
Gamayun, O., Iorgov, N., Lisovyy, O.
core   +4 more sources

Nonlinear Differential Equations Satisfied by Certain Classical Modular Forms

open access: yes, 2010
A unified treatment is given of low-weight modular forms on \Gamma_0(N), N=2,3,4, that have Eisenstein series representations. For each N, certain weight-1 forms are shown to satisfy a coupled system of nonlinear differential equations, which yields a ...
A. Enneper   +40 more
core   +1 more source

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