The problem of compact factors in ergodic theory and its relationship with the problem of extending a cocycle to a cocycle of a larger action are studied.
@article{bwmeta1.element.bwnjournal-article-smv122i3p275bwm,
author = {M. Lema\'nczyk},
title = {Cohomology groups, multipliers and factors in ergodic theory},
journal = {Studia Mathematica},
volume = {122},
year = {1997},
pages = {275-288},
zbl = {0884.28012},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv122i3p275bwm}
}
Lemańczyk, M. Cohomology groups, multipliers and factors in ergodic theory. Studia Mathematica, Tome 122 (1997) pp. 275-288. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv122i3p275bwm/
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