We calculate the dimensions of operators in three and six dimensional
superconformal field theories by using the duality between these theories at
large N and D=11 supergravity on AdS4/7×S7/4. We find that for
the duality relations to work the Kaluza--Klein masses given in the
supergravity literature must be rescaled and/or shifted.Comment: 10 pages on phyzzx.tex, typo (in eq. (20)) and TeX corrections, some
Comments adde