Every separable Banach space has a basis with uniformly controlled permutations
نویسندگان
چکیده
منابع مشابه
Every Banach Space is Reflexive
The title above is wrong, because the strong dual of a Banach space is too strong to assert that the natural correspondence between a space and its bidual is an isomorphism. This, from a categorical point of view, is indeed the right duality concept because it yields a self adjoint dualisation functor. However, for many applications the non–reflexiveness problem can be solved by replacing the n...
متن کاملNon - separable Banach spaces with non - meager Hamel basis
We show that an infinite-dimensional complete linear space X has: • a dense hereditarily Baire Hamel basis if |X| ≤ c; • a dense non-meager Hamel basis if |X| = κ = 2 for some cardinal κ. According to Corollary 3.4 of [BDHMP] each infinite-dimensional separable Banach space X has a non-meager Hamel basis. This is a special case of Theorem3.3 of [BDHMP], asserting that an infinite-dimensional Ba...
متن کاملThe alternating algorithm in a uniformly convex and uniformly smooth Banach space
Article history: Received 2 April 2014 Available online 2 July 2014 Submitted by P. Nevai
متن کاملDifferentiability of Cone-monotone Functions on Separable Banach Space
Motivated by applications to (directionally) Lipschitz functions, we provide a general result on the almost everywhere Gâteaux differentiability of real-valued functions on separable Banach spaces, when the function is monotone with respect to an ordering induced by a convex cone with nonempty interior. This seemingly arduous restriction is useful, since it covers the case of directionally Lips...
متن کاملSeparable Banach Space Theory Needs Strong Set Existence Axioms
We investigate the strength of set existence axioms needed for separable Banach space theory. We show that a very strong axiom, Π1 comprehension, is needed to prove such basic facts as the existence of the weak-∗ closure of any norm-closed subspace of `1 = c0. This is in contrast to earlier work [6, 4, 7, 23, 22] in which theorems of separable Banach space theory were proved in very weak subsys...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Dissertationes Mathematicae
سال: 2006
ISSN: 0012-3862,1730-6310
DOI: 10.4064/dm439-0-1