Results 41 to 50 of about 411,441 (337)

Massless particles, electromagnetism, and Rieffel induction [PDF]

, 1994
The connection between space-time covariant representations (obtained by inducing from the Lorentz group) and irreducible unitary representations (induced from Wigner's little group) of the Poincar\'{e} group is re-examined in the massless case.
Landsman, N. P., Wiedemann, U. A.
core   +3 more sources

From Tilings of Orientable Surfaces to Topological Interlocking Assemblies

Applied Sciences
A topological interlocking assembly (TIA) is an assembly of blocks together with a non-empty subset of blocks called the frame such that every non-empty set of blocks is kinematically constrained and can therefore not be removed from the assembly without
Reymond Akpanya, Tom Goertzen, Alice C. Niemeyer   +2 more
doaj   +1 more source

Theory of B(X)-Module: Algebraic Module Structure of Generally Unbounded Infinitesimal Generators

Advances in Mathematical Physics, 2020
The concept of logarithmic representation of infinitesimal generators is introduced, and it is applied to clarify the algebraic structure of bounded and unbounded infinitesimal generators.
Yoritaka Iwata
doaj   +1 more source

Exactness of the Fock space representation of the q-commutation relations

, 2010
We show that for all q in the interval (-1,1), the Fock representation of the q-commutation relations can be unitarily embedded into the Fock representation of the extended Cuntz algebra.
A. Nou, Alexandru Nica, D. Shlyakhtenko, D. Shlyakhtenko, E. Ricard, K. Davidson, K. Dykema, M. Bozejko, M. Bozejko, Matthew Kennedy, P. Sniady, P.E.T. Jorgensen   +11 more
core   +1 more source

Notes on higher-spin algebras: minimal representations and structure constants [PDF]

, 2014
The higher-spin (HS) algebras so far known can be interpreted as the symmetries of the minimal representation of the isometry algebra. After discussing this connection briefly, we generalize this concept to any classical Lie algebras and consider the ...
Joung, Euihun, Mkrtchyan, Karapet
core   +4 more sources

3D concrete printing of topological interlocking blocks

Materials & Design
In this work the feasibility of combining the concept of topological interlocking assemblies (TIA) with 3D concrete printing is investigated. In TIA, blocks are arranged in a manner that, when kinematically constrained by a surrounding frame, all blocks ...
Tom Goertzen, Tobias Neef, Philipp Scheffler, Domen Macek, Viktor Mechtcherine, Alice C. Niemeyer   +5 more
doaj   +1 more source

The Zakharov–Shabat Spectral Problem for Complexification and Perturbation of the Korteweg–de Vries Equation

Axioms, 2023
In this paper we consider examples of complex expansion (cKdV) and perturbation (pKdV) of the Korteweg–de Vries equation (KdV) and show that these equations have a representation in the form of the zero-curvature equation.
Tatyana V. Redkina, Arthur R. Zakinyan, Robert G. Zakinyan   +2 more
doaj   +1 more source

Selected Properties of Some Generalizations of BCK Algebras

Discussiones Mathematicae - General Algebra and Applications, 2020
The notion of a RM algebra, introduced recently, is a generalization of many other algebras of logic. The class of RM algebras contains (weak-)BCC algebras, BCH algebras, BCI algebras, BCK algebras and many others. A RM algebra is an algebra A = (A; →, 1)
Dymek Grzegorz
doaj   +1 more source

Topological tensor invariants and the current algebra approach: analysis of 196 nonleptonic two-body decays of single and double charm baryons – a review

European Physical Journal C: Particles and Fields, 2022
We shed new light on the standard current algebra approach to the nonleptonic two-body decays of single and double heavy charm baryons. By making use of the completeness relation for the flavor wave functions of the ground state baryon $$\mathbf{20 ...
Stefan Groote, Jürgen G. Körner
doaj   +1 more source

Representation of SU(infinity) Algebra for Matrix Models

, 2002
We investigate how the matrix representation of SU(N) algebra approaches that of the Poisson algebra in the large N limit. In the adjoint representation, the (N^2-1) times (N^2-1) matrices of the SU(N) generators go to those of the Poisson algebra in the
B. de Wit, C.K. Zachos, J. Ambjørn, J. Ambjørn, J. Hoppe, K.N. Anagnostopoulos, L. Smolin, N. Kitsunezaki, N. Kitsunezaki, Naofumi Kitsunezaki, Shozo Uehara   +10 more
core   +3 more sources