Resumen
Let A be a noncommutative Banach algebra with identity e. Let L be a multiplicative semigroup of left-invertible elements of A which properly contains the invertible elements of A. Then there does not exist a function g: L → A such that g(ab) = g(b)g(a) and g(a)a = e for all elements a and b of L. This paper contains an elementary proof of this result, and thereby answers a question posed by G. R. Allan.
| Idioma original | American English |
|---|---|
| Publicación | Proceedings of the American Mathematical Society |
| Volumen | 100 |
| N.º | 1 |
| DOI | |
| Estado | Published - may 1987 |
Disciplines
- Algebra
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