info:eu-repo/classification/msc/65-XX 1997-07-02 We prove a super approximation result for a wide class of approximations spaces (including finite elements and wavelet type spaces). In particular such property, also referred at as the discrete commutator property holds, provided that a projector operator exists, who acts "locally". Such property is used in getting estimates through localization techniques. Preprint ercim.cnr.ian//1997-1039a, 1997. oai:pumaoai.isti.cnr.it:cnr.imati/cnr.ian.pv/1997-PP-027 oai:pumaoai.isti.cnr.it:cnr.imati/cnr.ian.pv/1997-PP-027 false false 0.9 dedup_wf_001::359ecdcb5210c08560be2de97033a363 1 Bertoluzza, Silvia http://puma.isti.cnr.it/dfdownloadnew.php?ident=cnr.imati/cnr.ian.pv/1997-PP-027 http://puma.isti.cnr.it/rmydownload.php?filename=cnr.imati/cnr.ian.pv/1997-PP-027/1997-PP-027.bib%