𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The invertibility of operators and contraction mappings

✍ Scribed by Vaclav Dolezal


Publisher
Springer
Year
1999
Tongue
English
Weight
236 KB
Volume
18
Category
Article
ISSN
0278-081X

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


On positive invertibility of operators a
✍ M. R. Weber πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 122 KB

## Abstract In Banach spaces ordered by a normal cone that contains interior points the positive invertibility of operators is studied. If there exists a uniformly positive functional then any positively invertible operator __A__ possesses a __B__ ‐decomposition, i.e., a positive decomposition __A_

Invertibility of Helmholtz operators for
✍ Vladimir Rabinovich; Manuel Quino Cerdan πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 207 KB

## Abstract The paper is devoted to the investigation of the Helmholtz operators describing the propagation of acoustic waves in non‐homogeneous space. We consider the operator __A__ with a wave number __k__ such that where __k__~0~ is a positive function, __k__~Β±~ are complex constants with ℑ︁