1996-03
AUTHORSAAD Dijksma, Aurelian Gheondea
ABSTRACTFor a subspaceS of a Kreîn spaceK and an arbitrary fundamental decompositionK=K−[+]K+ ofK, we prove the index formula where κ±(S) stands for the positive/negative signature ofS. The difference dim(S∩K−)−dim(S⊥∩K+), provided it is well defined, is called the index ofS. The formula turns out to unify other known index formulac for operators or subspaces in a Kreîn space. More... »
PAGES58-72
http://scigraph.springernature.com/pub.10.1007/bf01192042
DOIhttp://dx.doi.org/10.1007/bf01192042
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