Results 11 to 20 of about 1,151,315 (246)

Mathematical Elements of Density Functional Theory [PDF]

open access: yes, 2022
We review some of the basic mathematical results about density functional theory.
arxiv   +1 more source

N-extension of double-graded supersymmetric and superconformal quantum mechanics [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2019
In the recent paper (Bruce and Duplij 2019 (arXiv:1904.06975 [math-ph])), Bruce and Duplij introduced a double-graded version of supersymmetric quantum mechanics (SQM). It is an extension of Lie superalgebraic nature of SQM to a -graded superalgebra.
N. Aizawa, K. Amakawa, S. Doi
semanticscholar   +1 more source

Ethnoscience of Physics-Math: Calculation of Energy and Wages of Hoeing Farmers in Indonesia

open access: yesJurnal Penelitian Pendidikan IPA, 2023
The purpose of this study is to describe the analysis of farmers' economic concepts, especially the wage system of land hoe labourers. The low wage value of land hoe labourers is a deep concern considering the amount of energy expended by farmers in ...
Sabaruddin Chaniago
semanticscholar   +1 more source

Partial Differential Equations, Spectral Theory, and Mathematical Physics [PDF]

open access: yesPartial Differential Equations, Spectral Theory, and Mathematical Physics, 2020
We investigate spectral and asymptotic properties of the particular Schrodinger operator (also known as the Bloch-Torrey operator), $-\Delta + i g x$, in infinite periodically perforated domains of $\mathbb R^d$.
D. Grebenkov, Nicolas Moutal, B. Helffer
semanticscholar   +1 more source

Simple conditions for the transformation of dynamical coordinates into canonical ones in Hamiltonian dynamics [PDF]

open access: yesOpen Communications in Nonlinear Mathematical Physics
We obtain conditions, which when fulfilled, permit to transform the coordinates of a dynamical system into pairs of canonical ones for some Hamiltonian system.
Patrick Cassam-Chenaï
doaj   +1 more source

Extracting dynamical equations from experimental data is NP-hard [PDF]

open access: yes, 2012
The behavior of any physical system is governed by its underlying dynamical equations. Much of physics is concerned with discovering these dynamical equations and understanding their consequences.
A. Mukherjea   +9 more
core   +4 more sources

Student Perceptions and Responses: Learning Using E-Module Physics-Math II

open access: yesJIPF: Jurnal Ilmu Pendidikan Fisika, 2023
Perception is influenced by several factors, one of which is biological factors such as gender. Gender is closely related to how different decisions are made between women and men.
A. Astalini   +3 more
semanticscholar   +1 more source

High order multiscale analysis of discrete integrable equations [PDF]

open access: yesOpen Communications in Nonlinear Mathematical Physics
In this article we present the results obtained applying the multiple scale expansion up to the order $\varepsilon^6$ to a dispersive multilinear class of equations on a square lattice depending on 13 parameters. We show that the integrability conditions
Rafael Hernandez Heredero   +2 more
doaj   +1 more source

Krein-Space Formulation of PT-Symmetry, CPT-Inner Products, and Pseudo-Hermiticity [PDF]

open access: yes, 2006
Emphasizing the physical constraints on the formulation of a quantum theory based on the standard measurement axiom and the Schroedinger equation, we comment on some conceptual issues arising in the formulation of PT-symmetric quantum mechanics.
A. Gonzalez-Lopez   +40 more
core   +2 more sources

Using Math in Physics: Overview [PDF]

open access: yesThe Physics Teacher, 2020
The key difference between math as math and math in science is that in science we blend our physical knowledge with our knowledge of math. This blending changes the way we put meaning to math and even to the way we interpret mathematical equations ...
E. Redish
semanticscholar   +1 more source

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