Examples of using Banach in English and their translations into Russian
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The well-known Tsar'kov's characterisation of finite-dimensional Banach spaces in which every bounded Chebyshev set(bounded P-acyclic set) is convex is
Solvability and strong correctness of the cauchy problem for abstract linear differential equations in the banach spaces.
representation theory, and the theory of Banach algebras.
These two directions of generalization can be combined in the inverse function theorem for Banach manifolds.
A new proof found by Vitali Milman in the 1970s was one of the starting points for the development of asymptotic geometric analysis also called asymptotic functional analysis or the local theory of Banach spaces.
The Banach-Mazur theorem asserts that any separable Banach space is isometrically isomorphic to a closed linear subspace of C(){\displaystyle C.
Any Banach algebra A{\displaystyle A}(whether it has an identity element or not) can be embedded isometrically into a unital Banach algebra A e{\displaystyle A_{e}} so as to
The set of eigenvectors span a Banach space, and, when there is a natural inner product,
Let the Banach spaces X{\displaystyle X} and Y{\displaystyle Y}
This allows to reduce the list of counterexamples in comparison with the Banach theory, where as is known the space of operators does not inherit the approximation property.
No infinite-dimensional Banach space is a Montel space,
Hahn's contributions to mathematics include the Hahn-Banach theorem and(independently of Banach and Steinhaus) the uniform boundedness principle.
since up to the recent time only the category Ban of Banach spaces and the category Fin of finite-dimensional spaces had been known to possess this property.
For sufficiently smooth g{\displaystyle g} the operator defined above is compact on reasonable Banach spaces such as Lp spaces.
and the study of Banach algebras.
He developed the theory of Scales in Banach spaces, the theory of characteristics of linear manifolds in conjugate Banach spaces, and with S.G. Krein and E.M. Semenov contributed
His work is in various areas of mathematical analysis such as the geometry of Banach spaces, harmonic analysis,
The definition of many normed spaces(in particular, Banach spaces) involves a seminorm defined on a vector space
are in the stereotype duality relations with Banach spaces: for any Banach space X{\displaystyle X}
with a given function belonging to a proper Hilbert or Banach space converges as ε→ 0 to that function: