Results 21 to 30 of about 1,901,618 (330)

Some General Theorems for Compact Acyclic Multifunctions

open access: yesMathematics, 2019
We present general Leray-Schauder type theorems for compact acyclic Multifunctions, using the topological transversality theorem by the author.
Donal O’Regan
doaj   +1 more source

How 2.5D Maps Design Improve the Wayfinding Performance and Spatial Ability of Map Users

open access: yesInformatics, 2021
Useful information can be provided by 2.5D maps that can take advantage of the additional dimension. However, aside from stereoscopic landmarks, optimal methods for presenting other essential information is unclear.
Meng-Cong Zheng, Yi-Wen Hsu
doaj   +1 more source

Topological Transversality Principles and General Coincidence Theory

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
This paper presents general topological coincidence principles for multivalued maps defined on subsets of completely regular topological spaces.
O’Regan Donal
doaj   +1 more source

Essential singularities of quasimeromorphic mappings.

open access: yesMATHEMATICA SCANDINAVICA, 1993
Suppose that \(f:\mathbb{B}^ n-\{0\} \to S^ n\) is a quasi-meromorphic mapping, where \(B^ n\) is the open unit ball in euclidean \(n\)-space and \(S^ n\) the unit sphere in euclidean \((n+1)\)-space. If 0 is an essential singularity then in every deleted neighbourhood of 0 there is an essential round sphere on which \(f\) assumes antipodal values ...
Martin, G.J., Gauld, D.B.
openaire   +3 more sources

S-palmitoylation of MAP kinase is essential for fungal virulence

open access: goldmBio
ABSTRACT S-palmitoylation is an important reversible protein post-translational modification in organisms. However, its role in fungi is uncertain. Here, we found the treatment of the rice false fungus Ustilaginoidea virens with S-palmitoylation inhibitor 2 BP resulted in a ...
Yuhang Duan   +18 more
openalex   +4 more sources

High-Precision Depth Map Estimation from Missing Viewpoints for 360-Degree Digital Holography

open access: yesApplied Sciences, 2022
In this paper, we propose a novel model to extract highly precise depth maps from missing viewpoints, especially for generating holographic 3D content. These depth maps are essential elements for phase extraction, which is required for the synthesis of ...
Hakdong Kim   +5 more
doaj   +1 more source

IMPLEMENTING NATURAL RESOURCES CADASTRAL PLAN IN PASARGADAE DISTRICT OF IRAN BY USING QUICK BIRD IMAGES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Natural Resources are essential for security and sustainable development of each country. Therefore, in order to reach sustainable development, conservation as well as optimum utilization of natural resources, executing of natural resources cadastral ...
G. H. Azhdari, K. Deilami, E. Firooznia
doaj   +1 more source

Decay of correlations in suspension semi-flows of angle-multiplying maps [PDF]

open access: yes, 2007
We consider suspension semi-flows of angle-multiplying maps on the circle. Under a $C^r$generic condition on the ceiling function, we show that there exists an anisotropic Sobolev space contained in the $L^2$ space such that the Perron-Frobenius operator
Tsujii, Masato
core   +1 more source

On the spectral mapping theorem for essential spectra

open access: yesPublicacions Matemàtiques, 1985
B. Gramsch and D. Lay have studied spectral mapping theorems for the essential spectra of an operator acting in a complex Banach space. Firstly they consider operators belonging to the Banach algebra of all bounded linear operators on the space, and later they derive the theorems for unbounded closed linear operators with non-empty resolvent from the ...
González, M.   +1 more
openaire   +7 more sources

On Polynomials Counting Essentially Irreducible Maps

open access: yesThe Electronic Journal of Combinatorics, 2022
We consider maps on genus-$g$ surfaces with $n$ (labeled) faces of prescribed even degrees. It is known since work of Norbury that, if one disallows vertices of degree one, the enumeration of such maps is related to the counting of lattice point in the moduli space of genus-$g$ curves with $n$ labeled points and is given by a symmetric polynomial $N_{g,
openaire   +4 more sources

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