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\f0\fs24 \cf0 Jean Bricmont\
\
"Renormalization group for random walks"\
\
I\'a0will\'a0explain the renormalization gropup method for random walks in random environments, first explaining the method\'a0\
for ordinary random walks and then showing how to apply it to various types of space-time dependence\'a0\
of the random environment of the random walk.\'a0}