On the polynomials which form an Appell sequence (I)
Abstract AuthorsTiberiu Popoviciu Keywords? Paper coordinatesT. Popoviciu, Asupra polinoamelor cari formează un şir Appell (I), Bull. Mathematique de la Soc.…
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On some maximum problems of Stieltjes
Abstract AuthorsTiberiu Popoviciu Keywords? Paper coordinatesT. Popoviciu, Sur certaines problèmes de maximum de Stieltjes, Bull. Math. de la Soc. Roum.…
Some remarks on a theorem of M. D. Pompeiu
Abstract AuthorsTiberiu Popoviciu Keywords? Paper coordinatesT. Popoviciu, Quelques remarques sur une théorème de M. D. Pompeiu, Bull. Math. de la…
Positive radial solutions for Dirichlet problems via a Harnack-type inequality
Abstract We deal with the existence and localization of positive radial solutions for Dirichlet problems involving \(\phi\)-Laplacian operators in a…
Semilinear problems with poly-Laplace type operators
AbstractThe paper deals with semilinear operator equations involving iterates of a strongly monotone symmetric linear operator. In particular there are…
Componentwise localization of solutions to systems of operator inclusions via Harnack type inequalities
Abstract We establish compression-expansion type fixed point theorems for systems of operator inclusions with decomposable multivalued maps. The approach is…
Iterates of multidimensional approximation operators via Perov theorem
AbstractThe starting point is an approximation process consisting of linear and positive operators. The purpose of this note is to…
On some applications of the controllability principle for fixed point equations
Abstract The aim of this paper is to draw attention to a general principle for solving control problems for operator…
Chebfun Solutions to a Class of 1D Singular and Nonlinear Boundary Value Problems
AbstractThe Chebyshev collocation method implemented in Chebfun is used in order to solve a class of second order one-dimensional singular…
Stationary Kirchhoff equations and systems with reaction terms
AbstractIn this paper, the operator approach based on the fixed point principles of Banach and Schaefer is used to establish…