Dear Nicolas, In Maple help
maplehelp(combstruct[specification]) I can find (labeled) F=Set(Set(Z,card>=1)) set partitions (unlabeled) A=Set(Sequence(Z,card>=1)) integer partition How would the same be done in MuPAD-Combinat? Of course, MC has this builtin, but if you have to define it via a grammar, how would that look like? Asking more generally, is MC like combstruct with respect to the non-correspondence of the labelled and unlabelled situation? You certainly know better than me that integer partitions are the isomorphism types of set partitions. Why is this not reflected in the grammar? With species it is. Ralf ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Aldor-combinat-devel mailing list Aldor-combinat-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/aldor-combinat-devel
