Approximate *-derivations and approximate quadratic *-derivations on C*-algebras
Choonkil Park, Hanyang University
18 October 2011
(1) Between B.4.39 and B.4.40, the following should be added \begin{eqnarray} \| f(a^*)-f(a)^*\| \le 4\varepsilon \|a\|^p \end{eqnarray} (*this one produces the equation (4.6))
(2) In B.4.40, `unique derivation' should be replaced by `unique quadartic $*$-derivation'
(3) In B.4.51, `satisfying (4.5) -- unique derivation' should be replaced by `satisfying (4.5) and (4.6) -- unique quadratic $*$-derivation'
Approximate *-derivations and approximate quadratic *-derivations on C*-algebras
18 October 2011
(1) Between B.4.39 and B.4.40,
the following should be added
\begin{eqnarray}
\| f(a^*)-f(a)^*\| \le 4\varepsilon \|a\|^p
\end{eqnarray}
(*this one produces the equation (4.6))
(2) In B.4.40, `unique derivation' should be replaced by `unique quadartic $*$-derivation'
(3) In B.4.51, `satisfying (4.5) -- unique derivation' should be replaced by `satisfying (4.5) and (4.6) -- unique quadratic $*$-derivation'
Competing interests
N/A