Results 31 to 40 of about 387,776 (314)

Characteristic polynomials of complex random matrix models

open access: yes, 2002
We calculate the expectation value of an arbitrary product of characteristic polynomials of complex random matrices and their hermitian conjugates. Using the technique of orthogonal polynomials in the complex plane our result can be written in terms of
Akemann, G   +3 more
core   +1 more source

Asymptotic Behavior and Stability in Linear Impulsive Delay Differential Equations with Periodic Coefficients

open access: yesMathematics, 2020
We study first order linear impulsive delay differential equations with periodic coefficients and constant delays. This study presents some new results on the asymptotic behavior and stability.
Ali Fuat Yeniçerioğlu   +2 more
doaj   +1 more source

On decisions of Schwartz' problem for J-analytic functions with the same Jordan basis of real and imaginary parts of J-matrix

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016
Boundary Schwartz' problem for J-analytic functions was studied within this scientific work. These functions are solutions of linear complex system of partial differential equations of the first order. It was considered, that the real and imaginary parts
Vladimir G Nikolaev
doaj   +1 more source

On the coefficients of the max-algebraic characteristic polynomial and equation [PDF]

open access: yes, 1983
summary:No polynomial algorithms are known for finding the coefficients of the characteristic polynomial and characteristic equation of a matrix in max- algebra.
Butkovič, Peter, Cuninghame-Green, R.A
core   +1 more source

A construction of analog of Fredgolm theorems for one class of first order model integro-differential equation with logarithmic singularity in the kernel

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017
The integral representations of the solution manifold for one class of the first order model integro-differential equation with logarithmic singularity in the kernel are constructed using arbitrary constants. The cases when the given integro-differential
Sarvar K Zaripov
doaj   +1 more source

Analysis of a characteristic equation

open access: yesJournal of Integral Equations and Applications, 1991
The authors investigate a characteristic equation occurring in epidemic models formulated in terms of integro-differential equations, where births and deaths are introduced and the total population size is assumed to be constant. They establish conditions on the two parameters of this equation, under which an equilibrium position is stable.
Hao, Dun-Yuan, Brauer, Fred
openaire   +2 more sources

The Relationship Between Semiclassical Laguerre Polynomials and the Fourth Painlevé Equation [PDF]

open access: yes, 2013
We discuss the relationship between the recurrence coefficients of orthogonal polynomials with respect to a semiclassical Laguerre weight and classical solutions of the fourth Painlevé equation. We show that the coefficients in these recurrence relations
Clarkson, Peter   +3 more
core   +1 more source

Partial Prolongations and Characteristics of Differential Equations [PDF]

open access: yesTransactions of the American Mathematical Society, 1969
This paper studies the behavior of characteristics under partial prolongations. Partial prolongations define a natural equivalence relation between systems of partial differential equations [2], [3]. Examples are given to show that characteristics are not preserved in general.
openaire   +1 more source

Heterogeneity in the Global Practice of Central Nervous System Staging in Pediatric Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási   +14 more
wiley   +1 more source

Effects of the Fluid Replacement Method During Online Hemodiafiltration on the Solute Removal Performance and Biocompatibility Using the Asymmetric Cellulose Triacetate Membrane

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai   +4 more
wiley   +1 more source

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