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math.FA2002
Set theory and cyclic vectors
Nik Weaver
Let H be a separable, infinite dimensional Hilbert space and let S be a countable subset of H. Then most positive operators on H have the property that every nonzero vector in the…
math.FA2001
Automatic convexity
Charles A. Akemann, Nik Weaver
In many cases the convexity of the image of a linear map with range is is automatic because of the facial structure of the domain of the map. We develop a four step procedure…
math.FA1998
Lipschitz algebras and derivations II: exterior differentiation
Nik Weaver
Basic aspects of differential geometry can be extended to various non-classical settings: Lipschitz manifolds, rectifiable sets, sub-Riemannian manifolds, Banach manifolds, Weiner…