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Equational definability of (complementary) central elements
(World Scientific, 2016-05)
For a variety with weak existentially definable factor congruences, we characterize whenthe properties "e is a central element" and "e and f are complementary central elements"are definable by (∀ V p = q)-formulas and by ...
Scaling, stability and singularities for nonlinear, dispersive wave equations: the critical case
(Iop Publishing LtdBristolInglaterra, 2002)
Varieties with equationally definable factor congruences II
(Birkhauser Verlag Ag, 2017-09-25)
We study four types of equational definability of factor congruences in varieties with 0 → and 1 →. The paper completes the work of a previous paper on left equational definability of factor congruences.
Existence Results for Semilinear Differential Evolution Equations with Impulses and Delay
(Universidad de La Frontera. Departamento de Matemática y EstadísticaUniversidade Federal de Pernambuco. Departamento de Matemática, 2010)
The modified Hunter-Saxton equation
(ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2012)
Invariants of binary differential equations
(SPRINGER/PLENUM PUBLISHERS, 2009)
In this paper, we study binary differential equations a(x, y)dy (2) + 2b(x, y) dx dy + c(x, y)dx (2) = 0, where a, b, and c are real analytic functions. Following the geometric approach of Bruce and Tari in their work on ...
EXPLICIT VARIATIONAL FORMS FOR THE INVERSES OF INTEGRAL LOGARITHMIC OPERATORS OVER AN INTERVAL
(SIAM PUBLICATIONS, 2012)
We introduce explicit and exact variational formulations for the weakly singular and hypersingular operators over an open interval as well as for their corresponding inverses. Contrary to the case of a closed curve, these ...
A symmetric system of mixed Painlevé III-V equations and its integrable origin
(2015-12-18)
A mixed symmetric Painlevé III-V model which describes a hybrid of both equations is defined and obtained by successive self-similarity and Dirac Lagrange multiplier reductions from an integrable 4-boson hierarchy.
Congruencias factor definibles /
(2007)
Una variedad tiene congruencias Factor Definibles (DFC) si los núcleos de las proyecciones canónicas en productos directos son definibles por una formula de primer orden \Phi cuyos parámetros son elementos centrales. Los ...