Pacific Journal of Mathematics · 1976 · 82 citations · 28 references
Natural SciencesMathematicsAlgebraAbstract AlgebraCommutative AlgebraLinear AlgebraOperator TheorySpectral TheoryOperator AlgebrasOperator SpacesUnbounded Operators
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A Non-Commutative Extension of Abstract Integration
I. E. Segal · Annals of Mathematics · 1953 · 768 citations
Self-adjoint algebras of unbounded operators
Robert T. Powers · Communications in Mathematical Physics · 1971 · 277 citations · Full text