Results 51 to 60 of about 64,055 (183)

The wonderland of reflections

open access: yes, 2017
A fundamental fact for the algebraic theory of constraint satisfaction problems (CSPs) over a fixed template is that pp-interpretations between at most countable \omega-categorical relational structures have two algebraic counterparts for their ...
Barto, Libor   +2 more
core   +2 more sources

Application of Group‐Theoretical Approaches in Structural Natural Frequency Analyses

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 7, 15 April 2026.
ABSTRACT Group theory has profoundly advanced physics and chemistry in systems with symmetries. Yet its use in structural engineering applications has not yet been fully explored beyond the aesthetics of symmetric designs. This work addresses two significant gaps that have limited the broader adoption of group‐theoretic methods in structural vibration ...
Shiyao Sun, Kapil Khandelwal
wiley   +1 more source

Electric‐Current‐Assisted Nucleation of Zero‐Field Hopfion Rings

open access: yesAdvanced Materials, Volume 38, Issue 21, 13 April 2026.
This work reports a novel and efficient nucleation protocol for 3D localized topological magnetic solitons‐hopfion rings in chiral magnets using pulsed electric currents. By using Lorentz transmission electron microscopy and topological analysis, we report characteristic features and extraordinary stability of hopfion rings in zero or inverted external
Xiaowen Chen   +12 more
wiley   +1 more source

Lattices of homomorphisms [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1986
AbstractGiven a variety K of lattice-ordered algebras, A ∈ K is catalytic if for all B ∈ K, K(A, B) is a lattice for the pointwise order. The catalytic objects are determined for various varieties of distributive-lattice-ordered algebras. The characterisations obtained do not show an overall unity and exhibit diverse behaviour.
Davey, B, Priestley, H
openaire   +3 more sources

Stability and Superstability of Ring Homomorphisms on Non-Archimedean Banach Algebras

open access: yesAbstract and Applied Analysis, 2011
Using fixed point methods, we prove the superstability and generalized Hyers-Ulam stability of ring homomorphisms on non-Archimedean Banach algebras. Moreover, we investigate the superstability of ring homomorphisms in non-Archimedean Banach algebras ...
M. Eshaghi Gordji, Z. Alizadeh
doaj   +1 more source

Some inequalities for star duality of the radial Blaschke-Minkowski homomorphisms

open access: yesOpen Mathematics, 2020
In 2006, Schuster introduced the radial Blaschke-Minkowski homomorphisms. In this article, associating with the star duality of star bodies and dual quermassintegrals, we establish Brunn-Minkowski inequalities and monotonic inequality for the radial ...
Zhao Xia, Wang Weidong, Lin Youjiang
doaj   +1 more source

Data Clustering Method for Fault‐Tolerant Privacy Protection of Smart Grid Based on BGN Homomorphic Encryption Algorithm

open access: yesEngineering Reports, Volume 8, Issue 4, April 2026.
Smart meter (SM): Collect the data of users' electricity consumption periodically, and preprocess the noise reduction by using the Robust Local Weighted Regression algorithm, then encrypt the private data in it by Boneh‐Goh‐Nissim homomorphic encryption, and submit the encrypted private data to the fog node.
Jiangtao Guo   +5 more
wiley   +1 more source

Fredholm Theory Relative to Any Algebra Homomorphisms

open access: yesMathematics
In this paper, we give another definition of Ruston elements and almost Ruston elements, which is equivalent to the definitions given by Mouton and Raubenheimer in the case that the homomorphism has a closed range and Riesz property.
Yingying Kong, Yabo Wang, Jingen Yang
doaj   +1 more source

On homomorphisms between specht modules for the Ariki-Koike algebra [PDF]

open access: yes, 2012
Specht modules occupy a position of central importance in the representation theory of both the symmetric and Iwahori-Hecke algebras, and there is hence considerable interest in achieving a greater understanding of their structure.
Corlett, Kelvin
core  

The Number of Group Homomorphisms from $D_m$ into $D_n$

open access: yes, 2012
Counting homomorphisms between cyclic groups is a common exercise in a first course in abstract algebra. A similar problem, accessible at the same level, is to count the number of group homomorphisms from a dihedral group of order $2m$ into a dihedral ...
Gallian J. A., Gallian J. A., Matei D.
core   +1 more source

Home - About - Disclaimer - Privacy