Unitary dilations of commutation relations asscociated to alternating bilinear forms.
Unitary equivalence of local algebras in the quasifree representation
Unitary representations induces from compact subgroups
Unitary representations of solvable Lie groups
Unitary sequences and classes of barrelledness.
It is well known that some dense subspaces of a barrelled space could be not barrelled. Here we prove that dense subspaces of l∞ (Ω, X) are barrelled (unordered Baire-like or p?barrelled) spaces if they have ?enough? subspaces with the considered barrelledness property and if the normed space X has this barrelledness property.These dense subspaces are used in measure theory and its barrelledness is related with some sequences of unitary vectors.
Unité Et Semi-Normes Dans Les Algèbres Localement Convexes.
Universal approximations of certain functionals in Banach spaces
Universal Compressions of Representations of H... (G).
Universal embeddings of into the space of continuous functions on a product space
Universal estimates of the spectral radius
Universal interpolating sequences on some function spaces
Let be the Hilbert space with reproducing kernel . This paper characterizes some sufficient conditions for a sequence to be a universal interpolating sequence for .
Universal properties of some commutative radical Banach algebras.
Universal reparametrization of a family of cycles : a new approach to meromorphic equivalence relations
We study analytic families of non-compact cycles, and prove there exists an analytic space of finite dimension, which gives a universal reparametrization of such a family, under some assumptions of regularity. Then we prove an analogous statement for meromorphic families of non-compact cycles. That is a new approach to Grauert’s results about meromorphic equivalence relations.
Universal series by trigonometric system in weighted spaces.
Universal simultaneous approximations of the coefficient functionals
Universal spaces and universal bases in metric spaces
Universal spaces for strictly convex Banach Spaces.
We show that if a separable Banach space X contains an isometric copy of every strictly convex separable Banach space, then X contains an isometric copy of l1 equipped with its natural norm. In particular, the class of strictly convex separable Banach spaces has no universal element. This provides a negative answer to a question asked by J. Lindenstrauss.
Universal stability of Banach spaces for ε -isometries
Let X, Y be real Banach spaces and ε > 0. A standard ε-isometry f: X → Y is said to be (α,γ)-stable (with respect to for some α,γ > 0) if T is a linear operator with ||T|| ≤ α such that Tf- Id is uniformly bounded by γε on X. The pair (X,Y) is said to be stable if every standard ε-isometry f: X → Y is (α,γ)-stable for some α,γ > 0. The space X[Y] is said to be universally left [right]-stable if (X,Y) is always stable for every Y[X]. In this paper, we show that universally right-stable...
Universal zero solutions of linear partial differential operators
A generalized approach to several universality results is given by replacing holomorphic or harmonic functions by zero solutions of arbitrary linear partial differential operators. Instead of the approximation theorems of Runge and others, we use an approximation theorem of Hörmander.
Universally weakly inner one-parameter automorphism groups of seperable C*-algebras, II.