Results 111 to 120 of about 168,726 (280)

The dimension subalgebra problem for enveloping algebras of Lie superalgebras [PDF]

Proceedings of the American Mathematical Society, 1995
Let L be an arbitrary Lie superalgebra over a field of characteristic different from 2. Denote by ω u ( L ) \omega u(L) the ideal generated by L in its universal enveloping algebra U ( L ) U(L) .
openaire   +2 more sources

Efficient Numerical Framework for Geothermal Energy Production Optimization in Fracture‐Controlled Reservoirs

International Journal for Numerical Methods in Fluids, EarlyView.
We introduce an efficient open‐source numerical framework for the automated search for the placements of injection and production wells in hot fracture‐controlled reservoirs that sustainably optimize geothermal energy production. We model the reservoirs as discrete fracture networks in 3D. The fluid flow and heat transport in the reservoirs are modeled
Ondřej Pártl, Ernesto Meneses Rioseco
wiley   +1 more source

Quantum metrology with linear Lie algebra parameterizations

Physical Review Research
Lie algebraic techniques are powerful and widely used tools for studying dynamics and metrology in quantum optics. When the Hamiltonian generates a Lie algebra with finite dimension, the unitary evolution can be expressed as a finite product of ...
Ruvi Lecamwasam, Tatiana Iakovleva, Jason Twamley   +2 more
doaj   +1 more source

Derivations and automorphisms of locally matrix algebras and groups

Доповiдi Нацiональної академiї наук України
We describe derivations and automorphisms of infinite tensor products of matrix algebras. Using this description, we show that, for a countable–dimensional locally matrix algebra A over a field F, the dimension of the Lie algebra of outer derivations of ...
O.O. Bezushchak
doaj   +1 more source

Improving Implied Volatility Forecasts for American Options Using Neural Networks

Journal of Futures Markets, EarlyView.
ABSTRACT This paper explores the application of neural networks to improve pricing of American options. Focusing on both American and European options on the S&P 100 index from January 2016 to August 2023, we integrate neural networks to model the difference between market‐implied and model‐implied volatilities derived from the Black‐Scholes and Heston
Haitong Jiang, Emese Lazar, Miriam Marra
wiley   +1 more source

Classification of Filiform Lie Algebras up to dimension 7 Over Finite Fields

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
This paper tries to develop a recent research which consists in using Discrete Mathematics as a tool in the study of the problem of the classification of Lie algebras in general, dealing in this case with filiform Lie algebras up to dimension 7 over ...
Falcón Óscar J., Falcón Raúl M., Núñez Juan, Pacheco Ana M., Villar M. Trinidad   +4 more
doaj   +1 more source

How (not) to Cage an Electron: The Perfluoro Cage Effect as an Extrinsic Molecular Property

Helvetica Chimica Acta, EarlyView.
A rigorous definition within Kohn–Sham density functional theory is presented for the notion of an caged electron inside perfluorinated fullerenes as radical anions. ABSTRACT The notion of a (molecular) electron cage was coined for the unique hosting capacity of perfluorocubane, suggesting the “encapsulation of an electron” within the highly symmetric ...
Andreas Riedmiller, Christian Mück‐Lichtenfeld, Johannes Neugebauer   +2 more
wiley   +1 more source

Computing abelian subalgebras for linear algebras of upper-triangular matrices from an algorithmic perspective

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
In this paper, the maximal abelian dimension is algorithmically and computationally studied for the Lie algebra hn, of n×n upper-triangular matrices. More concretely, we define an algorithm to compute abelian subalgebras of hn besides programming its ...
Ceballos Manuel, Núñez Juan, Tenorio Ángel F.   +2 more
doaj   +1 more source

Static and Dynamic Analysis of Porous Gas Bearings Lubricated With Air, Refrigerant R‐134a, Helium and Hydrogen

Lubrication Science, EarlyView.
ABSTRACT Porous gas bearings (PGBs) enable high‐speed, oil‐free operation in modern rotating machinery. This study develops a coupled thermo‐hydrodynamic (THD) model for a cylindrical porous gas bearing lubricated with four working fluids—air, R‐134a, helium and hydrogen.
S. Bechiri, B. Bouchehit, B. Bou‐Saïd
wiley   +1 more source

The asymptotically-free gauge theories

Journal of High Energy Physics
We show how to classify the asymptotically-free gauge theories in four spacetime dimensions, focussing here on the case of purely fermionic matter. The classification depends on the fact (which we prove) that the dimension and Dynkin index of irreducible
Ben Gripaios, Khoi Le Nguyen Nguyen
doaj   +1 more source