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On Dragilev type power Köthe spaces

100%

B. Djakov P., Zahariuta V. P.

Studia Mathematica

1996

tom 120

nr 3

219-234

A complete isomorphic classification is obtained for Köthe spaces $X = K(exp[χ(p - κ (i)) - 1/p]a_i)$ such that $X qd_≃ X^2$; here χ is the characteristic function of the interval [0,∞), the function κ: ℕ → ℕ repeats its values infinitely many times, and $a_i → ∞$. Any of these spaces has the quasi-equivalence property.

Compound invariants and embeddings of Cartesian products

100%

Chalov P. A., Djakov P. B., Zahariuta V. P.

Studia Mathematica

1999

tom 137

nr 1

33-47

New compound geometric invariants are constructed in order to characterize complemented embeddings of Cartesian products of power series spaces. Bessaga's conjecture is proved for the same class of spaces.

Ograniczanie wyników

2 Studia Mathematica

2 Zahariuta V. P.

1 B. Djakov P.

1 Chalov P. A.

1 Djakov P. B.

1 1999

1 1996

Wyniki wyszukiwania

On Dragilev type power Köthe spaces

Compound invariants and embeddings of Cartesian products