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STABLY ISOMORPHIC DUAL OPERATOR ALGEBRAS
"... Abstract. We prove that two unital dual operator algebras A, B are stably isomorphic if and only if they are ∆-equivalent [7], if and only if they have completely isometric normal representations α, β on Hilbert spaces H, K respectively and there exists a ternary ring of operators M ⊂ B(H, K) such t ..."
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Abstract. We prove that two unital dual operator algebras A, B are stably isomorphic if and only if they are ∆-equivalent [7], if and only if they have completely isometric normal representations α, β on Hilbert spaces H, K respectively and there exists a ternary ring of operators M ⊂ B(H, K) such that α(A) = [M∗β(B)M] −w ∗ and β(B) = [Mα(A)M ∗ ] −w∗. 1.
TRO equivalent algebras
"... In this work we study a new equivalence relation between w ∗ closed algebras of operators on Hilbert spaces. The algebras A and B are called TRO equivalent if there exists a ternary ring of operators M (i.e. MM∗M ⊂ M) such that A = [M∗BM] −w∗ and B = [MAM∗] −w∗. We prove that two reflexive algebras ..."
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In this work we study a new equivalence relation between w ∗ closed algebras of operators on Hilbert spaces. The algebras A and B are called TRO equivalent if there exists a ternary ring of operators M (i.e. MM∗M ⊂ M) such that A = [M∗BM] −w∗ and B = [MAM∗] −w∗. We prove that two reflexive algebras are TRO equivalent if and only if there exists a ∗ isomorphism between the commutants of their diagonals mapping the invariant projection lattice of the first algebra onto the lattice of the second one. In the case of separably acting CSL algebras the criterion is simpler: they are TRO equivalent if and only if there exists an isomorphism between their lattices which “respects continuity”. We explore some consequences of TRO equivalence for CSL algebras. We also prove that TRO equivalence is stronger than “spatial Morita equivalence”. Two CSL algebras are “spatially Morita equivalent ” if and only if their lattices are isomorphic. In this case if one of them is synthetic then so is the other.
TRO EQUIVALENT ALGEBRAS G.K. ELEFTHERAKIS
"... Abstract. In this work we study a new equivalence relation between w∗ closed algebras of operators on Hilbert spaces. The algebras A and B are called TRO equivalent if there exists a ternary ring of operators M (i.e. MM∗M⊂M) such thatA = spanw*(M∗BM) and B = spanw*(MAM∗). We prove that two reflexive ..."
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Abstract. In this work we study a new equivalence relation between w∗ closed algebras of operators on Hilbert spaces. The algebras A and B are called TRO equivalent if there exists a ternary ring of operators M (i.e. MM∗M⊂M) such thatA = spanw*(M∗BM) and B = spanw*(MAM∗). We prove that two reflexive algebras are TRO equivalent if and only if there exists a ∗ isomorphism between the commutants of their diagonals mapping the invariant projection lattice of the first algebra onto the lattice of the second one. 1.