Results 181 to 190 of about 30,859 (297)

The period map of a 4-parameter family of K3 surfaces and the Aomoto-Gel'fand hypergeometric function of type (3,6)(Algebraic Manipulation for Differential Equations)

, 1989
Keiji Matsumoto, Takeshi Sasaki, Masaaki Yoshida   +2 more
openalex   +1 more source

On the processes of diorthogonalization of some vector families, which appear while characteristic polynomes of matrices are being constructed and which are used for solving the systems of linear algebraic equations. 1

, 2005
O. A. Chernaya, A. I. Yakimchik
openalex   +2 more sources

Attribute Implication Bases From Galois Connection Structures

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Modeling knowledge systems by determining relationships among key variables have been and currently is a fundamental and nontrivial challenge in real‐world scenarios. Many approaches have been developed to reach this goal, but many of them are heuristic and require of alternative procedures to provide robust and tractable rules.
M. Eugenia Cornejo, Jesús Medina, Francisco José Ocaña   +2 more
wiley   +1 more source

Direct Products for the Hamiltonian Density Property. [PDF]

J Geom Anal
Andrist RB, Huang G.
europepmc   +1 more source

A transformal transcendence result for algebraic difference equations [PDF]

Moshe Kamensky, Rahim Moosa
openalex   +1 more source

C∞$$ {C}^{\infty } $$‐Structures for Liénard Equations and New Exact Solutions to a Class of Klein–Gordon Equations

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Liénard equations are analyzed using the recent theory of 𝒞∞‐structures. For each Liénard equation, a 𝒞∞‐structure is determined by using a Lie point symmetry and a 𝒞∞‐symmetry. Based on this approach, a novel method for integrating these equations is proposed, which consists in solving sequentially two completely integrable Pfaffian equations.
Beltrán de la Flor, Adrián Ruiz, Concepción Muriel   +2 more
wiley   +1 more source

Algebraic formulas for first-passage times of Markov processes in the linear framework. [PDF]

Bull Math Biol
Nam KM, Gunawardena J.
europepmc   +1 more source

On a Class of Algebraic Solutions to the Painlevé VI Equation, Its Determinant Formula and Coalescence Cascade

, 2003
Tetsu Masuda
openalex   +2 more sources

Hybrid Reaction–Diffusion Epidemic Models: Dynamics and Emergence of Oscillations

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we construct a hybrid epidemic mathematical model based on a reaction–diffusion system of the SIR (susceptible‐infected‐recovered) type. This model integrates the impact of random factors on the transmission rate of infectious diseases, represented by a probabilistic process acting at discrete time steps.
Asmae Tajani, Cristiana J. Silva, Guillaume Cantin   +2 more
wiley   +1 more source

Derivation of the Microbial Inactivation Rate Equation from an Algebraic Primary Survival Model Under Constant Conditions. [PDF]

Foods
Zhu S, Li B, Chen G.
europepmc   +1 more source