Singular nonlinear elliptic equations in .
Singular perturbations for a class of quasi-linear hyperbolic equations
Singular sets and number of solutions of nonlinear boundary value problems
Singular supports. I.
Singular value decomposition normally estimated Geršgorin sets.
Singular Value Estimates for Certain Convolution-Product Operators.
Singular values of trilinear forms.
Singular -Laplacian third-order BVPs with derivative dependance
This work is devoted to the existence of solutions for a class of singular third-order boundary value problem associated with a -Laplacian operator and posed on the positive half-line; the nonlinearity also depends on the first derivative. The upper and lower solution method combined with the fixed point theory guarantee the existence of positive solutions when the nonlinearity is monotonic with respect to its arguments and may have a space singularity; however no Nagumo type condition is assumed....
Singuläre Integrale mit gemsichten Homogenitäten auf Mannigfaltigkeiten und Anwendungen in der Funktionentheorie.
Singuläre Integraloperatoren inLp-Räumen.
Singularité des produits de Anzai associés aux fonctions caractéristiques d'un intervalle
Sizes of sets and some fixed point theorems
Skew products in the centralizer of compact abelian group extensions.
Ski de fond
Slant Hankel operators
In this paper the notion of slant Hankel operator , with symbol in , on the space , being the unit circle, is introduced. The matrix of the slant Hankel operator with respect to the usual basis of the space is given by , where is the Fourier expansion of . Some algebraic properties such as the norm, compactness of the operator are discussed. Along with the algebraic properties some spectral properties of such operators are discussed. Precisely, it is proved that for an invertible...
Slepian's inequality and commuting semigroups
Slow growth for universal harmonic functions.
Slowly changing vectors and the asymptotic finite-dimensionality of an operator semigroup.
Slowly decreasing entire functions and convolution equations
Slowly oscillating perturbations of periodic Jacobi operators in l²(ℕ)
We prove that the absolutely continuous part of the periodic Jacobi operator does not change (modulo unitary equivalence) under additive perturbations by compact Jacobi operators with weights and diagonals defined in terms of the Stolz classes of slowly oscillating sequences. This result substantially generalizes many previous results, e.g., the one which can be obtained directly by the abstract trace class perturbation theorem of Kato-Rosenblum. It also generalizes several results concerning perturbations...