Results 21 to 30 of about 2,711 (280)

The Second Hyper-Zagreb Coindex of Chemical Graphs and Some Applications

open access: yesJournal of Chemistry, 2021
The second hyper-Zagreb coindex is an efficient topological index that enables us to describe a molecule from its molecular graph. In this current study, we shall evaluate the second hyper-Zagreb coindex of some chemical graphs. In this study, we compute
Ahmed Ayache   +3 more
doaj   +1 more source

Entanglement of valence-bond-solid state models on topological surfaces

open access: yesResults in Physics, 2022
We investigated the scaling behaviors of entanglements on the two-leg ladder lattice structure implemented with Affleck–Kennedy–Lieb–Tasaki (AKLT) model on six types of topological surfaces, namely, torus, sphere, real projective plane, Klein bottle ...
Wuttichai Pankeaw   +2 more
doaj   +1 more source

Quantum phase transition between symmetry enriched topological phases in tensor-network states

open access: yesPhysical Review Research, 2023
Quantum phase transitions between different topologically ordered phases exhibit rich structures and are generically challenging to study in microscopic lattice models.
Lukas Haller   +3 more
doaj   +1 more source

Wiener Polarity Index of Tensor Product of Graphs [PDF]

open access: yesMathematics Interdisciplinary Research, 2016
Mathematical chemistry is a branch of theoretical chemistry for discussion and prediction of the molecular structure using mathematical methods without necessarily referring to quantum mechanics.
Mojgan Mogharrab   +2 more
doaj   +1 more source

Algebraic Representation of Topologies on a Finite Set

open access: yesMathematics, 2022
Since the 1930s, topological counting on finite sets has been an interesting work so as to enumerate the number of corresponding order relations on the sets.
Hongfeng Guo   +3 more
doaj   +1 more source

Topologies on quotient space of matrices via semi‐tensor product [PDF]

open access: yesAsian Journal of Control, 2019
AbstractAn equivalence of matrices via semi‐tensor product (STP) is proposed. Using this equivalence, the quotient space is obtained. Parallel and sequential arrangements of the natural projection on different shapes of matrices lead to the product topology and quotient topology respectively. Then the Frobenious inner product of matrices is extended to
Daizhan Cheng, Zequn Liu
openaire   +3 more sources

Twisted string theory in anti-de Sitter space

open access: yesJournal of High Energy Physics, 2020
We construct a string theory in three-dimensional anti-de Sitter space-time that is independent of the boundary metric. It is a topologically twisted theory of quantum gravity. We study string theories with an asymptotic N = 2 superconformal symmetry and
Songyuan Li, Jan Troost
doaj   +1 more source

BPS skyrmions of generalized Skyrme model in higher dimensions

open access: yesJournal of High Energy Physics, 2022
In this work we consider the higher dimensional Skyrme model, with spatial dimension d > 3, focusing on its BPS submodels and their corresponding features.
Emir Syahreza Fadhilla   +2 more
doaj   +1 more source

On the joint continuity of module multiplication [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2023
Let A be any topological algebra over R or C. We show that the property of a topological left (right or two-sided) A-module to have a jointly continuous action of A is inherited by submodules, quotient modules, completion, direct products, direct sums ...
Mart Abel
doaj   +1 more source

Tensor Network study of the (1+1)-dimensional Thirring Model

open access: yesEPJ Web of Conferences, 2018
Tensor Network methods have been established as a powerful technique for simulating low dimensional strongly-correlated systems for over two decades.
Carmen Bañuls Mari   +5 more
doaj   +1 more source

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