C*-algebra (Q263809)
Banach *-algebra such that |𝑥*𝑥|=|𝑥||𝑥*|=|𝑥|²
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Current Data About C*-algebra
(P31) (Q24034552)
(P279) (Q16930464)
(P910) (Q8331299)
(P1482) https://mathoverflow.net/tags/c-star-algebras
https://math.stackexchange.com/tags/c-star-algebras
(P2534) \begin{aligned}x^{**}&=x\\(x+y)^*&=x^*+y^*\\(xy)^*&=y^*x^*\\(\lambda x)^*&=\bar\lambda x^*\\\|x^*x\|&= \|x\|\|x^*\| = \|x\|^2\end{aligned}
(P6104) (Q8487137)
(P7235) \lambda
^*
\|\|
\bar{}