Interpolation spaces
Interpolation theorem for the p-harmonic transform
We establish an interpolation theorem for a class of nonlinear operators in the Lebesgue spaces arising naturally in the study of elliptic PDEs. The prototype of those PDEs is the second order p-harmonic equation . In this example the p-harmonic transform is essentially inverse to . To every vector field our operator assigns the gradient of the solution, . The core of the matter is that we go beyond the natural domain of definition of this operator. Because of nonlinearity our arguments...
Interpolation theorems for operators relatively bounded by differential-type transformations.
Interpolation theorems for rearrangement invariant -spaces of functions, , and some applications
Interpolation theory and measures related to operator ideals
Given any operator ideal , there are two natural functionals , that one can use to show the deviation of the operator to the closed surjective hull of and to the closed injective hull of , respectively. We describe the behaviour under interpolation of and . The results are part of joint works with A. Martínez, A. Manzano and P. Fernández-Martínez.
Interpolation with a parameter function.
Interpolationseigenschaften des Spektrums linearer Operatoren auf Lp-Räumen.
Interpolationsfunktoren, Folgenideale und Operatorenideale
Interprétation probabiliste et extension des intégrales stochastiques non commutatives
Intersection properties for cones of monotone and convex functions with respect to the couple
The paper is devoted to some aspects of the real interpolation method in the case of triples (X₀,X₁,Q) where X̅: = (X₀,X₁) is a Banach couple and Q is a convex cone. The first fundamental result of the theory, the interpolation theorem, holds in this situation (for linear operators preserving the cone structure). The second one, the reiteration theorem, holds only under some conditions on the triple. One of these conditions, the so-called intersection property, is studied for cones with respect...
Intersection properties for cones of nondecreasing concave functions
We prove that the basic facts of the real interpolation method remain true for couples of cones obtained by intersection of the cone of concave functions with rearrangement invariant spaces.
Intersection properties of balls in spaces of compact operators
We study the connection between intersection properties of balls and the existence of large faces of the unit ball in Banach spaces. Hanner’s result that a real space has the 3.2 intersection property if an only if disjoint faces of the unit ball are contained in parallel hyperplanes is extended to infinite dimensional spaces. It is shown that the space of compact operators from a space to a space has the 3.2 intersection property if and only if and have the 3.2 intersection property and...
Intersection properties of balls in tensor products of some Banach spaces.
Intersections and algebraic sums of Musielak-Orlicz spaces
Intersections of closed balls and geometry of Banach spaces.
Intersections of minimal prime ideals in the rings of continuous functions
A space is called -compact by M. Mandelker if the intersection of all free maximal ideals of coincides with the ring of all functions in with compact support. In this paper we introduce -compact and -compact spaces and we show that a space is -compact if and only if it is both -compact and -compact. We also establish that every space admits a -compactification and a -compactification. Examples and counterexamples are given.
Intertwining Multiplication Operators on Function Spaces
Suppose that X is a Banach space of analytic functions on a plane domain Ω. We characterize the operators T that intertwine with the multiplication operators acting on X.
Intertwining operators
Intertwining operators over L1 (G) for G ? [PG] ? [SIN].
Intervention de la bornologie dans la convexité holomorphe