Results 241 to 250 of about 2,445,513 (291)

Differential Equations

2022
The Encyclopedia of Mathematical Geosciences is a complete and authoritative reference work. It provides concise explanation on each term that is related to Mathematical Geosciences. Over 300 international scientists, each expert in their specialties, have written over 300 separate articles on different topics of mathematical geosciences including ...
Zlotnik, Sergio, Soler Villanueva, Jaume
openaire   +2 more sources

Fuzzy differential equations

Fuzzy Sets and Systems, 2000
The authors deal with a new solution to a fuzzy initial value problem of first order. In the first part, they give a way from the initial value problem for the first-order ordinary differential equation to the fuzzy first-order initial value problem. In the second part, the authors define a new-kind of solution based on the fuzzification of the crisp ...
James J. Buckley, Thomas Feuring
openaire   +5 more sources

Multivalued Differential Equations and Ordinary Differential Equations

SIAM Journal on Applied Mathematics, 1970
(E) e F(x, t), where F is upper semicontinuous, from known results in the theory of ordinary differential equations. This will be accomplished by showing that, for any F upper semicontinuous and convex, it is always possible to "approximate" the multivalued differential equation (E) by appropriately chosen ordinary differential equations. This would be
openaire   +2 more sources

Set differential equations versus fuzzy differential equations

Applied Mathematics and Computation, 2005
The paper is devoted to establish some results on existence, uniqueness and flow invariance for set differential equations, and their connection with fuzzy differential equations. Both types of differential equations are emergent research areas, so the background included in this paper will be appreciated for all people interested in the topic.
openaire   +1 more source

Hill's Differential Equation

The Mathematical Gazette, 1945
1. We deal with the equation where ψ(ωt) is continuous, periodic in t with period 2π/ω a,
openaire   +2 more sources

On the Eigenvalues of Differential Equations

American Journal of Mathematics, 1951
is the t-value satisfying q (t) S. The assumption of the existence of a third derivative, as pointed out by Milne, was unessential to his proof. Titchmarsh [5] gave a simplified proof of (4) retaining all of Milne's conditions, except that concerning the existence of a third derivative.
openaire   +1 more source

geometry of differential equations

Journal of Soviet Mathematics, 1983
This paper contains a survey of papers on the geometry of differential equations, which appeared no earlier than 1972, continuing the general survey (RZhMat, 1974, 11A800), and considers in more detail a special cycle of investigations of the geometry of systems of partial differential equations, distinguished by the presence of practical applications.
openaire   +2 more sources

Home - About - Disclaimer - Privacy