Results 41 to 50 of about 10,386,040 (275)

Functional equation of a special Dirichlet series

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
In this paper we study the special Dirichlet series L(s)=23∑n=1∞sin(2πn3)n−s,  s∈C This series converges uniformly in the half-plane Re(s)>1 and thus represents a holomorphic function there.
Ibrahim A. Abou-Tair
doaj   +1 more source

An exact estimate of the third Hankel determinants for functions inverse to convex functions

open access: yesМатематичні Студії, 2023
Invesigation of bounds for Hankel determinat of analytic univalent functions is prominent intrest of many researcher from early twenth century to study geometric properties.
B. Rath, K. S. Kumar, D. V. Krishna
doaj   +1 more source

Noncritical holomorphic functions on Stein spaces

open access: yes, 2015
We prove that every reduced Stein space admits a holomorphic function without critical points. Furthermore, any closed discrete subset of such a space is the critical locus of a holomorphic function.
Forstneric, Franc
core   +1 more source

The role of Fourier modes in extension theorems of Hartogs-Chirka type [PDF]

open access: yes, 2004
We generalize Chirka's theorem on the extension of functions holomorphic in a neighbourhood of graph(F)\cup(\partial D\times D) -- where D is the open unit disc and graph(F) denotes the graph of a continuous D-valued function F -- to the bidisc.
Bharali   +6 more
core   +2 more sources

Finely holomorphic functions

open access: yesJournal of Functional Analysis, 1980
AbstractLet O(U) denote the finely harmonic functions on U a finely open subset of C such that ∂g∂z̄ = 0 almost surely on U. Define Af(K) to be those g in C(K) such that if K′ is the fine interior of K then g ¦K′ is in O(K). We prove that Af(K) is invariant under the Vitushkin localization operators, i.e., it is T-invariant.
openaire   +4 more sources

Chiral Deformations of Conformal Field Theories [PDF]

open access: yes, 1996
We study general perturbations of two-dimensional conformal field theories by holomorphic fields. It is shown that the genus one partition function is controlled by a contact term (pre-Lie) algebra given in terms of the operator product expansion.
Awata   +25 more
core   +4 more sources

Holomorphic Extensions of Orthogonal Projections Into Holomorphic Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1975
A condition is given which insures that the orthogonal projection of a function into the holomorphic functions is holomorphically extendible across a given boundary point.
openaire   +1 more source

Differential and fuzzy differential sandwich theorems involving quantum calculus operators

open access: yesJournal of Nigerian Society of Physical Sciences
The principle of subordination is useful in comparing two holomorphic functions when the range of one holomorphic function is a subset of the other and they comply at a single point.
I. R. Silviya, K. Muthunagai
doaj   +1 more source

Weighted Composition Operators from Generalized Weighted Bergman Spaces to Weighted-Type Spaces

open access: yesJournal of Inequalities and Applications, 2009
Let φ be a holomorphic self-map and let ψ be a holomorphic function on the unit ball B. The boundedness and compactness of the weighted composition operator ψCφ from the generalized weighted Bergman space into a class of ...
Dinggui Gu
doaj   +1 more source

A Carleman type theorem for proper holomorphic embeddings

open access: yes, 1996
In 1927, Carleman showed that a continuous, complex-valued function on the real line can be approximated in the Whitney topology by an entire function restricted to the real line. In this paper, we prove a similar result for proper holomorphic embeddings.
D. Gaier   +17 more
core   +1 more source

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