[複變]是否存在holomorphic 從D(1)-{0}到D(2)-D(1)

[emptyempty (none)]

D(r):= open disc in C of radius r.
B(r):= closed disc in C of radius r.
是否有 biholomorphic function (or holomorphic function)

從 D(1)-{0} to D(2)-B(1)  ??

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