Talk:Pointwise convergence

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I'm not quited convinced that the series {x^n} is not uniformly convergent on the interval [0,1).The limit function f(x) is not continious at x0=1. For every 0<x<1 the following is true: lim (n->inf) [sup {|fn(x)-f(x)|} ]=0

No, that last assertion is false. The value of
 \sup \{\,|f_n(x) - f(x)| : 0 \le x \le 1 \,\}
is 1, for every n. That is because, for any fixed value of n, xn can be made as close to 1 as desired by making x close enough, but not equal, to 1. So fn(x) approximates 1 while the limiting function f(x) remains 0, as x approaches 1. Michael Hardy (talk) 15:39, 5 March 2008 (UTC)
whoa, I am pretty sure that is not true. For any value x < 1, as n goes to infinty, x^n goes to 0. So that function does converge uniformly. —Preceding unsigned comment added by 126.109.110.248 (talk) 12:15, 13 March 2011 (UTC)