Timeline for Why $A^A =A$ implies that $A$ is a C$^$ algebra (Proposition 5.2.8 of An Invitation to Quantum Groups and Duality by Thomas Timmermann)

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when toggle format	what		by	license	comment
Sep 11, 2015 at 11:51	answer	added	Simon Henry		timeline score: 4
Sep 11, 2015 at 11:45	comment	added	Simon Henry		Your example does not work: You have $A^* A \subset A$ but there is no equality.
Sep 11, 2015 at 11:32	history	asked	heller	CC BY-SA 3.0

Timeline for Why $A^*A =A$ implies that $A$ is a C$^*$ algebra (Proposition 5.2.8 of An Invitation to Quantum Groups and Duality by Thomas Timmermann)