Results 21 to 30 of about 70,001 (264)

Symmetric nonlinear functional differential equations at resonance

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2019
It is shown that a class of symmetric solutions of the scalar nonlinear functional differential equations at resonance with deviations from $\mathbb{R}\to\mathbb{R}$ can be investigated by using the theory of boundary-value problems.
Natalia Dilna   +3 more
doaj   +1 more source

Tropical differential equations [PDF]

open access: yes, 2015
Tropical differential equations are introduced and an algorithm is designed which tests solvability of a system of tropical linear differential equations within the complexity polynomial in the size of the system and in its coefficients.
Grigoriev, Dima
core   +1 more source

Solvable quantum Grassmann matrices [PDF]

open access: yesJournal of Statistical Mechanics: Theory and Experiment, 2017
25 pages, 4 ...
Anninos, Dionysios   +1 more
openaire   +5 more sources

On the solvability of systems of pseudodifferential operators [PDF]

open access: yes, 2008
The paper studies the solvability for square systems of pseudodifferential operators. We assume that the system is of principal type, i.e., the principal symbol vanishes of first order on the kernel.
Dencker, Nils
core   +2 more sources

Conditions for the solvability of the Cauchy problem for linear first-order functional differential equations [PDF]

open access: yes, 2013
Conditions for the unique solvability of the Cauchy problem for a family of scalar functional differential equations are obtained. These conditions are sufficient for the solvability of the Cauchy problem for every equation from the family and are ...
Bravyi, Eugene
core   +3 more sources

Controllability distributions and systems approximations: a geometric approach [PDF]

open access: yes, 1994
Given a nonlinear system we determine a relation at an equilibrium between controllability distributions defined for a nonlinear system and a Taylor series approximation of it. The value of such a relation is appreciated if we recall that the solvability
Nijmeijer, H., Ruiz, A.C.
core   +3 more sources

Exactly Solvable Schrödinger Operators [PDF]

open access: yesAnnales Henri Poincaré, 2011
We systematically describe and classify 1-dimensional Schr dinger equations that can be solved in terms of hypergeometric type functions. Beside the well-known families, we explicitly describe 2 new classes of exactly solvable Schr dinger equations that can be reduced to the Hermite equation.
Derezinski, Jan, Wrochna, Michal
openaire   +3 more sources

Determinant of Tax Aggressiveness and Relationship with Firm Value (Empirical Study Company Listed Go-Public in Indonesia Stock Exchange)

open access: yesJurnal Ekonomi Bisnis dan Kewirausahaan (JEBIK), 2020
This study aims to determine the effect of liquidity, profitability, and solvability on the level of tax aggressiveness with firm value as a control variable.
Akhmad Hitten, Novita Novita
doaj   +1 more source

Evolution of quantum systems with a scaling type of time-dependent Hamiltonians [PDF]

open access: yes, 2002
We introduce a new class of quantum models with time-dependent Hamiltonians of a special scaling form. By using a couple of time-dependent unitary transformations, the time evolution of these models is expressed in terms of related systems with time ...
L. ŠAMAJ, Lee M. H., Percus J. K.
core   +2 more sources

Computer-Aided Analysis of Solvable Rigid Lie Algebras with a Given Eigenvalue Spectrum

open access: yesAxioms, 2022
With the help of symbolic computer packages, the study of the cohomological rigidity of real solvable Lie algebras of rank one with a maximal torus of derivations t and the eigenvalue spectrum spec(t)=1,k,k+1,⋯,n+k−2 initiated in a previous work is ...
Rutwig Campoamor-Stursberg   +1 more
doaj   +1 more source

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