A Few Properties Of Some ?-type Block-sobolev Spaces

This article mainly discuss some properties of I-type Block-Soboles space. Let 0 < p ? s ? ?. If n(p/s-1) ? ? ? n(p - 1), or 0 < p ?1, n(p - 1) ? ? < 0. We have:(?) if b(x) ? Cc?(?), g(x)?I - BWmp,s,a(?) and N weight index(0?|?| ? m ), the Leibniz formula can be proved.(?) if b(x)? Cc?(?2) and g(x) ? I - BWmp,s,?(?), Then b(x)g(x) ?I - BWmp,s,?(?),(?) the I - BWmp,s,a(?) spaces are complete.