Results 51 to 60 of about 4,865 (165)

Levi problem and semistable quotients

open access: yes, 2012
A complex space $X$ is in class ${\mathcal Q}_G$ if it is a semistable quotient of the complement to an analytic subset of a Stein manifold by a holomorphic action of a reductive complex Lie group $G$.
Cox D   +7 more
core   +1 more source

Closed 3‐forms in five dimensions and embedding problems

open access: yesJournal of the London Mathematical Society, Volume 109, Issue 4, April 2024.
Abstract We consider the question if a five‐dimensional manifold can be embedded into a Calabi–Yau manifold of complex dimension 3 such that the real part of the holomorphic volume form induces a given closed 3‐form on the 5‐manifold. We define an open set of 3‐forms in dimension five which we call strongly pseudoconvex, and show that for closed ...
Simon Donaldson, Fabian Lehmann
wiley   +1 more source

Optimizing Artificial Neural Network Learning Using Improved Reinforcement Learning in Artificial Bee Colony Algorithm

open access: yesApplied Computational Intelligence and Soft Computing, Volume 2024, Issue 1, 2024.
Artificial neural networks (ANNs) are widely used machine learning techniques with applications in various fields. Heuristic search optimization methods are typically used to minimize the loss function in ANNs. However, these methods can lead the network to become stuck in local optima, limiting performance.
Taninnuch Lamjiak   +5 more
wiley   +1 more source

ENSEMBLES TOTALEMENT RÉELS ET DOMAINES PSEUDOCONVEXES

open access: yesMemoirs of the Faculty of Science, Kyushu University. Series A, Mathematics, 1985
Main theorem: Let \(L\) be a connected Lie group, \(L'\subset L\) a closed subgroup, \(X\) a complex manifold, \(p: F\to X\) an analytic fiber space with fiber \(L/L'\); let \(D\) be a locally pseudoconvex domain in \(F\) such that there is an open \(G\subset X\) and a totally real submanifold \(M\) of \(G\), \(\dim_{\mathbb R} M =\dim_{\mathbb C} X\),
Hamada, Hidetaka, Kajiwara, Joji
openaire   +3 more sources

The Investigation of Some Essential Concepts of Extended Fuzzy‐Valued Convex Functions and Their Applications

open access: yesAdvances in Fuzzy Systems, Volume 2024, Issue 1, 2024.
In this paper, we are thus motivated to define and introduce the extended fuzzy‐valued convex functions that can take the singleton fuzzy values −∞˜ and +∞˜ at some points. Such functions can be characterized using the notions of effective domain and epigraph.
T. Allahviranloo   +7 more
wiley   +1 more source

Peak Points for Pseudoconvex Domains: A Survey [PDF]

open access: yesJournal of Geometric Analysis, 2008
This paper surveys results concerning peak points for pseudoconvex domains. It includes results of Laszlo that have not been published elsewhere.
openaire   +2 more sources

Compactness of commutators of Toeplitz operators on q-pseudoconvex domains

open access: yesElectronic Journal of Differential Equations, 2018
Let $\Omega$ be a bounded q-pseudoconvex domain in $\mathbb{C}^n$, $n \geq 2$ and let $1 \leq q \leq n-1$. If $\Omega$ is smooth, we find sufficient conditions for the $\overline\partial$-Neumann operator to be compact.
Sayed Saber
doaj  

Compactness of the Complex Green Operator on C1 Pseudoconvex Boundaries in Stein Manifolds

open access: yesMathematics
We study compactness for the complex Green operator Gq associated with the Kohn Laplacian □b on boundaries of pseudoconvex domains in Stein manifolds. Let Ω⋐X be a bounded pseudoconvex domain in a Stein manifold X of complex dimension n with C1 boundary.
Abdullah Alahmari   +4 more
doaj   +1 more source

On Bergman completeness of non-hyperconvex domains

open access: yes, 1999
We study the problem of the boundary behaviour of the Bergman kernel and the Bergman completeness in some classes of bounded pseudoconvex domains, which contain also non-hyperconvex domains.
Jarnicki, M., Pflug, P., Zwonek, W.
core  

Variations of pseudoconvex domains

open access: yesProceedings of the Japan Academy, Series A, Mathematical Sciences, 1983
A connected Hausdorff space E together with a locally homeomorphic map \(\pi\) of E to \({\mathbb{R}}^ m\) is called an unramified covering domain over the space \({\mathbb{R}}^ m\). Suppose D is such a domain and \(D_ p\) is a sequence of relatively compact subdomains of D such that \(x^ 0\in D_ 1\), \(D_ p\subset D_{p+1}\), \(\cup^{\infty}_{p=1}D_ p ...
openaire   +3 more sources

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