I was given this hint on how to compute a hypergeometric sum Wikipedia:Reference desk/Mathematics - Wikipedia, the free encyclopedia
| | | | | | | | | | | Wikipedia:Reference desk/Mathematics - Wikipedia, the fr...The Wikipedia Reference Desk covering the topic of mathematics. Mathematics #eee #f5f5f5 #eee #aaa #aaa #aaa #00f #36b #000 #00f mathematics Wikipedia:Refe... | | | | Se på en.wikipedia.org | Forhåndsvis efter Yahoo | | | | | F =. 3 : '+/(2^i)*|:(!/~)|.i=.i.>:y' S =. 4 : '(y!x)*(1,-y)H.(-x)2' G =. 3 : '>y(S&.>)i.>:y' F 10 1 12 67 232 562 1024 1486 1816 1981 2036 2047 G 10 1 12 67 232 562 1024 1486 1816 1981 2036 _ wa=. 4 : '((x=y)*<:2^>:x)+(-.x=y)*x S y' NB. work around H =. 3 : '>y(wa&.>)i.>:y' H 10 1 12 67 232 562 1024 1486 1816 1981 2036 2047 Question: Is it a bug that (1 _10)H.(_10)2 evaluates to infinity? Thanks! Bo. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
