119 citations
- Aarhus UniversityDK1 paper
- Bar-Ilan UniversityIL1 paper
- Ben-Gurion University of the NegevIL1 paper
- Cornell UniversityUS1 paper
- Institute for Design Problems in MicroelectronicsRU1 paper
- Institute of MicroelectronicsCN1 paper
- Purdue University West LafayetteUS1 paper
- University of AlabamaUS1 paper
- University of Notre DameUS1 paper
Showing math.FAShow all
3 papers · 1 filter
math.FA2005★ 1 cited
Necessary and sufficient condition for compactness of the embedding operator
A. G. Ramm
An improvement of the author's result, proved in 1961, concerning necessary and sufficient conditions for the compactness of an imbedding operator is given.
math.FA2005
The Fredholm index of a pair of commuting operators
Xiang Fang
This paper concerns Fredholm theory in several variables, and its applications to Hilbert spaces of analytic functions. One feature is the introduction of ideas from commutative al…
math.FA2004
Dynamical systems method (DSM) for unbounded operators
A. G. Ramm
Let be an unbounded linear operator in a real Hilbert space , a generator of semigroup, and be a nonlinear map. The DSM (dynamical systems metho…