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Revision difference : weak convergence
Version 4 Version 3
Suppose $X$ is a topological vector space, $X'$ is the continuous dual Suppose $X$ is a topological vector space, $X'$ is the continuous dual
of $X$, and $x_0,x_1,\ldots $ is a sequence in $X$. of $X$, and $x_0,x_1,\ldots $ is a sequence in $X$.
Then we say that $x_i$ \emph{converges weakly} to $x\in X$ if Then we say that $x_i$ \emph{converges weakly} to $x\in X$ if
$$ $$
\lim_{i\to \infty} f(x_i) = f(x) \lim_{i\to \infty} f(x_i) = f(x)
$$ $$
for every $f\in X'$. for every $f\in X'$.