Here this theory is specified to the class of fractal approximation methods. The main result is a formula for the so-called α-number of an approximation ...

Abstract. In this paper, a Fredholm theory for approximation sequences is proposed. A sequence is called Fredholm if it is invertible modulo a cer.

The goal of this paper is to analyse how this formal structure arises from intrinsic properties of the algebras 2f. The basic of these properties are the ...

The present paper is a continuation of [5, 7] where a Fredholm theory for approximation sequences is proposed and some of its properties and consequences ...

Abstract. In this paper, a Fredholm theory for approximation sequences is proposed. A sequence is called Fredholm if it is invertible modulo a cer-.

In this paper, a Fredholm theory for approximation sequences is proposed. A sequence is called Fredholm if it is invertible modulo a certain ideal which plays ...

In this section we consider compact and Fredholm sequences in fractal algebras. ... Roch, Algebras of approximation sequences: Fredholm theory in fractal.

For deeper results on the Fredholm theory for such finite section sequences ... Algebras of Approximation Sequences: Structure of Fractal Algebras. Article.

Fractal algebras. 3. Rich sequences. T-structured ... -Fredholm sequences ... Approximation sequences to operators in A. Approximation sequences to operators in A.

In this section we consider compact and Fredholm sequences in fractal algebras. ... Roch, Algebras of approximation sequences: Fredholm theory in fractal.