Results 41 to 50 of about 438,174 (168)

Comparative Assessment of UAV and Sentinel-2 NDVI and GNDVI for Preliminary Diagnosis of Habitat Conditions in Burunge Wildlife Management Area, Tanzania

open access: yesEarth, 2022
Habitat condition is a vital ecological attribute in wildlife conservation and management in protected areas, including the Burunge wildlife management areas in Tanzania.
Lazaro J. Mangewa   +6 more
doaj   +1 more source

Topological methods on solvability, multiplicity and bifurcation of a nonlinear fractional boundary value problem

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
In this paper, we first prove new properties of the $(a, q)$-stably solvable maps for a class of decomposable operators in the form of $LF$, where $L$ is a bounded linear operator and $F$ is nonlinear.
Wenying Feng
doaj   +1 more source

Extreme positive linear maps onC *-algebras

open access: yesMathematische Zeitschrift, 1988
Let A be a unital \(C^ *\)-algebra and let B be a von Neumann algebra. Let S(A,B) be the convex set of unital positive linear maps between A and B. We prove that the extreme points of S(A,B) are exactly the unital algebra homomorphisms if and only if A is abelian and, either B is abelian or dim A\(
openaire   +1 more source

Design of PDC Controllers by Matrix Reversibility for Synchronization of Yin and Yang Chaotic Takagi-Sugeno Fuzzy Henon Maps

open access: yesAbstract and Applied Analysis, 2012
This paper investigates the synchronization of Yin and Yang chaotic T-S fuzzy Henon maps via PDC controllers. Based on the Chinese philosophy, Yin is the decreasing, negative, historical, or feminine principle in nature, while Yang is the increasing ...
Chun-Yen Ho   +2 more
doaj   +1 more source

The Non-m-Positive Dimension of a Positive Linear Map [PDF]

open access: yesQuantum, 2019
We introduce a property of a matrix-valued linear map $\Phi$ that we call its ``non-m-positive dimension'' (or ``non-mP dimension'' for short), which measures how large a subspace can be if every quantum state supported on the subspace is non-positive ...
Nathaniel Johnston   +2 more
doaj   +1 more source

Determining Effective Environmental Factors in the Distribution of Endangered Endemic Medicinal Plant Species Using the BMLR Model: The Example of Wild Celery (Kelussia odoratissima Mozaff., Apiaceae) in Zagros (Iran)

open access: yesPlants, 2022
Kelussia odoratissima Mozaff. is a medicinal species native to Iran. The goal of this research was to determine the environmental factors important for the distribution of K. doratissima in Iran using BMLR modeling.
Esfandiar Jahantab   +8 more
doaj   +1 more source

Infinite dimensional generalizations of Choi’s Theorem

open access: yesSpecial Matrices, 2019
In this paper we give a simple sequence of necessary and sufficient finite dimensional conditions for a positive map between certain subspaces of bounded linear operators on separable Hilbert spaces to be completely positive. These criterions are natural
Friedland Shmuel
doaj   +1 more source

On Supra-Additive and Supra-Multiplicative Maps

open access: yesJournal of Function Spaces and Applications, 2013
Let A and B be ordered algebras over ℝ, where A has a generating positive cone and B satisfies the property that b2>0 if 0≠b∈B. We give some conditions for a map T:A→B which is supra-additive and supra-multiplicative for all positive and negative ...
Jin Xi Chen, Zi Li Chen
doaj   +1 more source

On positive linear maps preserving invertibility

open access: yesJournal of Functional Analysis, 1984
A positive linear map \(\Phi\) between two \(C^*\)-algebras is a Jordan homomorphism if \(\Phi\) preserves invertibility and the range of \(\Phi\) is a \(C^*\)-algebra. A counterexample is given for the case that the range of \(\Phi\) is not assumed to be a \(C^*\)-algebra; this answers a question raised by \textit{B. Russo} [Proc. Am. Math. Soc.
Choi, M-D.   +4 more
openaire   +2 more sources

the coincidence lefschetz number for self-maps of lie groups

open access: yesمجلة بغداد للعلوم, 2006
Let/. It :0 ---0 G be any two self maps of a compact connected oriented Lie group G. In this paper, for each positive integer k , we associate an integer with fk,hi . We relate this number with Lefschetz coincidence number.
Baghdad Science Journal
doaj   +1 more source

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