> Sage seems to use the definition from Concrete Mathematics by Graham, > Knuth and Patashnik: > That gives e.g. > sage: binomial(-4, 5) > -56
Right. GKP call it "upper negation". If you look at my demo-function you will see that this condition is preserved in the suggested extension (case 3). The proposal returns a superset of the current values. > Concrete Mathematics is seen as something > of a bible in large parts of computer science, and it's unfortunate to > disagree with a basic definition in there. It /extends/ this definition. As long as k>=0 nothing will change compared to the GKP definition. Upper negation will be untouched. Peter -- 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 https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
