Results 31 to 40 of about 646,451 (325)

The Max Noether Fundamental Theorem is Combinatorial [PDF]

open access: yes, 2010
In the present paper we give a reformulation of the Noether Fundamental Theorem for the special case where the three curves involved have the same degree. In this reformulation, the local Noether's Conditions are weakened.
Buzunáriz, M. Á. Marco   +1 more
core  

Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films

open access: yesAdvanced Functional Materials, EarlyView.
The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram   +2 more
wiley   +1 more source

A fundamental theorem on graph operators

open access: yesMathematics Open
A graph operator is a function [Formula: see text] defined on some set of graphs such that whenever two graphs G and H are isomorphic, written [Formula: see text], then [Formula: see text].
Severino V. Gervacio
doaj   +1 more source

A note on the homomorphism theorem for hemirings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1978
The fundamental homomorphism theorem for rings is not generally applicable in hemiring theory. In this paper, we show that for the class of N-homomorphism of hemirings the fundamental theorem is valid.
D. M. Olson
doaj   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

open access: yesAdvanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar   +8 more
wiley   +1 more source

Acceleration of evolutionary processes by learning and extended Fisher's fundamental theorem

open access: yesPhysical Review Research, 2022
Natural selection is a general and powerful concept to explain evolutionary processes in biological organisms and to design engineering systems such as genetic algorithms.
So Nakashima, Tetsuya J. Kobayashi
doaj   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Implications of Local Friendliness Violation for Quantum Causality

open access: yesEntropy, 2021
We provide a new formulation of the Local Friendliness no-go theorem of Bong et al. [Nat. Phys. 16, 1199 (2020)] from fundamental causal principles, providing another perspective on how it puts strictly stronger bounds on quantum reality than Bell’s ...
Eric G. Cavalcanti, Howard M. Wiseman
doaj   +1 more source

Applications of controlled surgery in dimension 4: Examples

open access: yes, 2006
The validity of Freedman's disk theorem is known to depend only on the fundamental group. It was conjectured that it fails for nonabelian free fundamental groups. If this were true then surgery theory would work in dimension four.
Hegenbarth, Friedrich, Repovš, Dušan
core   +1 more source

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy