C*-Algebras and Operator Theory

Gerard J. Murphy, C. (1990). C*-Algebras and Operator Theory. Academic Press.

Type

Book chapter

Intellectual base

Review or monograph

Year

1990

ISBN

9780125113601

Link

https://openlibrary.org/books/OL1849155Mmatched

Cited by

1 citation across 1 artifact.

Domain-specific

• Positive element
  • For a C-star algebra \(A\), an element \(a\) is positive when it is self-adjoint and its spectrum lies in \([0,\infty)\); equivalently, \(a=b^*b\) for some \(b\in A\), and equivalently it has a unique positive square root.

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