4 citations · 12 across the 7 of their papers we have counts for
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Some non-spectral DT-operators in finite von Neumann algebras, II: measures with atoms
Ken Dykema, Amudhan Krishnaswamy-Usha
Results about angles between Haagerup--Schultz projections for DT-operators whose measures have atoms are proved, which in some cases imply that such operators are non-spectral. Se…
Local and multilinear noncommutative de Leeuw theorems
Martijn Caspers, Bas Janssens, Amudhan Krishnaswamy-Usha +1
Let be a discrete subgroup of a locally compact unimodular group . Let be a -multiplier on with and let $T_{m}: L_p(\widehat{G})…
Some non-spectral DT-operators in finite von Neumann algebras
Ken Dykema, Amudhan Krishnaswamy-Usha
Given a DT-operator whose Brown measure is radially symmetric and has a certain concentration property, it is shown that is not spectral in the sense of Dunford. This is ac…
Angles between Haagerup--Schultz projections and spectrality of operators
Ken Dykema, Amudhan Krishnaswamy-Usha
We investigate angles between Haagerup--Schultz projections of operators belonging to finite von Neumann algebras, in connection with a property analogous to Dunford's notion of sp…
Nilpotent elements of operator ideals as single commutators
Ken Dykema, Amudhan Krishnaswamy-Usha
For an arbitrary operator ideal I, every nilpotent element of I is a single commutator of operators from I^t, for an exponent t that depends on the degree of nilpotency.