- #1
jdcasey9
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Homework Statement
Let (X,d) and (Y,p) be metric spaces, and let f, fn: X -> Y with fn -> f uniformly on X. If each fn is continuous at xcX, and if xn -> x in X, prove that lim n-> infinity fn(xn) = f(x).
Homework Equations
llxll inf (the infinity norm of x) = max (lx1l,...,lxnl)
The Attempt at a Solution
fn and f are continuous, so f(x) is defined.
lfn(xn) - f(x)l <= llfn-fll inf (the infinity norm of fn-f) and llfn-fll inf -> 0 as n->infinity so lfn(xn)-f(x)l -> 0 as n -> infinity and lim fn(xn) = f(x) as n->infinity.
Seems very easy, so I probably am missing something.