Results 11 to 20 of about 1,458 (126)

International Journal of Mathematical Combinatorics, Vol.7 [PDF]

open access: yes, 2013
The International J.Mathematical Combinatorics (ISSN 1937-1055) is a fully refereed international journal, sponsored by the MADIS of Chinese Academy of Sciences and published in USA quarterly comprising 460 pages approx.
Mao, Linfan (Editor-in-Chief)
core   +1 more source

Lorentzian Lie 3-algebras and their Bagger-Lambert moduli space [PDF]

open access: yes, 2008
We classify Lie 3-algebras possessing an invariant lorentzian inner product. The indecomposable objects are either one-dimensional, simple or in one-to-one correspondence with compact real forms of metric semisimple Lie algebras.
de Medeiros, Paul   +4 more
core   +1 more source

On Reflections and Rotations in Minkowski 3-Space [PDF]

open access: yes, 2015
In this paper, we investigate the reflections in Minkowski three-space by three different approaches. Firstly, we define Lorentzian reflections with Lorentzian inner product.
Melek Erdoğdu   +3 more
core   +1 more source

Spectra of Compact Quotients of the Oscillator Group

open access: yes, 2021
This paper is a contribution to harmonic analysis of compact solvmanifolds. We consider the four-dimensional oscillator group Osc₁, which is a semi-direct product of the three-dimensional Heisenberg group and the real line.
Fischer, Mathias, Kath, Ines
core   +1 more source

Unitary and Vilenkin's wave functions

open access: yes, 2023
It is remarkably difficult to reconcile unitary and Vilenkin's wave function. For example, the natural conserved inner product found in quantum unimodular gravity applies to the Hartle-Hawking wave function, but fails for its Vilenkin counterpart.
Magueijo, João   +2 more
core   +1 more source

Pseudo-orthogonal Yang-Mills theories and connections to gravity [PDF]

open access: yes, 2023
We formulate gauge theories on noncompact Lorentzian manifolds. For definiteness we choose an SO(1,4) gauge theory -- the isometry group of the five dimensional Minkowski space.
Prokopec, Tomislav, Mistretta, Giovanni
core   +2 more sources

Lorentzian matrix multiplication and the motions on Lorentzian plane

open access: yes, 2006
In this paper, a new matrix multiplication is defined in Rnm × Rpn by using Lorentzian inner product in Rn, where Rnm is set of matrices of m rows and n columns. With this multiplication it has been shown that Rnn is an algebra with unit.
Gündoğan Halit   +5 more
core   +1 more source

Local index theory for Lorentzian manifolds [PDF]

open access: yes
Index theory for Lorentzian Dirac operators is a young subject with significant differences to elliptic index theory. It is based on microlocal analysis instead of standard elliptic theory and one of the main features is that a nontrivial index is ...
Strohmaier, A., Bär, C.
core   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

Conformal Metallosaccharide Hybrid Films for Protecting Wood Surfaces From Environmental Damage

open access: yesAdvanced Functional Materials, EarlyView.
Ti‐ribose hybrid films fabricated by molecular layer deposition form a conformal and uniform coating on wood surfaces, which provides water repellence, dimensional stability, and resistance to acidic and alkaline environments, while preserving the natural appearance.
Wenwen Wang   +7 more
wiley   +1 more source

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