If x [tex]\epsilon[/tex] A [tex]\subset[/tex] R[tex]\overline{}n[/tex] and y [tex]\epsilon[/tex] B [tex]\subset[/tex] R[tex]\overline{}m[/tex],(adsbygoogle = window.adsbygoogle || []).push({});

then A X B [tex]\subset[/tex] R[tex]\overline{}m+n[/tex].

Is there any difference between the connotation of (x,y) [tex]\epsilon[/tex] R[tex]\overline{}m+n[/tex] and a vector z in R[tex]\overline{}(m+n)[/tex]?

thanks!

(can't get the (m+n) above the line yet)

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# Conjuction of sets

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