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a study on construction of iranian life tables: the case study of modified brass logit system
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15 صفحه اولRegularity of the extremal solutions for the Liouville system
where λ, μ > 0 are parameters and Ω is a smoothly bounded domain of R , N ≥ 1. As shown by M. Montenegro (see [6]), there exists a limiting curve Υ in the first quadrant of the (λ, μ)-plane serving as borderline for existence of classical solutions of (1). He also proved the existence of a weak solution u∗ for every (λ∗, μ∗) on the curve Υ and left open the question of its regularity. Following...
متن کاملThe .p;q/ Generalized Anti-reflexive Extremal Rank Solutions to a System of Matrix Equations
Let n n complex matrices P andQ be nontrivial generalized reflection matrices, i.e., P D P D P 1 ¤ In, Q DQ DQ 1 ¤ In. A complex matrix A with order n is said to be a .P;Q/ generalized anti-reflexive matrix, if PAQ D A. We in this paper mainly investigate the .P;Q/ generalized anti-reflexive maximal and minimal rank solutions to the system of matrix equation AX D B . We present necessary and su...
متن کاملExtremal system of solutions for a coupled system of nonlinear fractional differential equations by monotone iterative method
In this paper, we deal with a coupled system of nonlinear fractional differential equations, which involve the Riemann-Liouville derivatives of different fractional orders. By using the monotone iterative technique combined with the method of upper and lower solutions, we not only obtain the existence of extremal system of solutions, but also establish iterative sequences for approximating the ...
متن کاملExistence of Extremal Solutions for Impulsive Delay Fuzzy Integrodifferential Equations in $n$-dimensional Fuzzy Vector Space
In this paper, we study the existence of extremal solutions forimpulsive delay fuzzy integrodifferential equations in$n$-dimensional fuzzy vector space, by using monotone method. Weshow that obtained result is an extension of the result ofRodr'{i}guez-L'{o}pez cite{rod2} to impulsive delay fuzzyintegrodifferential equations in $n$-dimensional fuzzy vector space.
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ژورنال
عنوان ژورنال: Journal of Differential Equations
سال: 1966
ISSN: 0022-0396
DOI: 10.1016/0022-0396(66)90064-7