William Stein wrote: >> IIRC Maple used to have something like *& to denote matrix >> multiplication, don't know if this is still the case, > > Hey, you're right-ish: > > http://kb.iu.edu/data/afbm.html > > They don't use * either, they use "." (like in Mathematica). They > deprecated *&.
Actually Maple has no real matrix multiplication operator. They use "*" to denote "commutative multiplication", and "." for "non-commutative multiplication" (and "*~" for elementwise multiplication, "@" for composition, "&*" for user-defined multiplication). Both "*" and "." can be used as part of symbolic expressions (a*b-b*a is immediately simplified to 0, while a.b-b.a is not), and are interpreted as multiplication of more concrete objects where it makes sense. -- Marc -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
