I forget to mention that the vectors are ordered. I think that one of the possible solutions is to use lapply, i.e., < T %in% lapply(allv, function(x,y) all.equal(x,y),y=somev) [1] TRUE -- View this message in context: http://r.789695.n4.nabble.com/Searching-elements-in-list-tp3987066p3987487.html Sent from the R help mailing list archive at Nabble.com.