http://www.matematica.net/portal/e-books/Graham%20-%20Knuth%20-%20Patashnik%20-%20%20Concrete%20Mathematics.pdf errata on http://www-cs-faculty.stanford.edu/~uno/gkp.html
R.E. Boss > -----Oorspronkelijk bericht----- > Van: [email protected] > [mailto:[email protected]] Namens Joey K Tuttle > Verzonden: zaterdag 22 december 2012 8:49 > Aan: [email protected] > Onderwerp: Re: [Jprogramming] Re : Sigma notation > > Another good reference on notation is the Graham - Knuth - Patashnik > book CONCRETE MATHEMATICS a Foundation for Computer Science and the > associated Concrete Math Companion by Ken Iverson. Chapter two of the > respective books are on summation and notation. > > The Iverson book is available to read in the j wiki - the other one for > around $25 used, or perhaps at a library. > > On 2012/12/21 23:25 , Roger Hui wrote: > >> Lambda considered harmful? LOL > > > > No, sigma considered harmful. In conventional notation there's big sigma > > for summation and big pi for product. But how do you do max insert (>./)? > > Min insert (<./)? And insert (^./)? Etc. > > > > Infinite series (products, etc.) best done by having infinite vectors. See > > *Remembering Eugene > > McDonnell*<http://www.jsoftware.com/papers/eem/eemapl2010.htm> > > > > i. 4 > > 0 1 2 3 > > > > i. _ > > 0 1 2 3 4 5 ... > > > > +/ 3 ^ - i. _ > > 1.5 > > > > > > and *Bring Something Beautiful* <http://archive.vector.org.uk/art10500390> . > > > > > > On Fri, Dec 21, 2012 at 11:08 PM, Alex Giannakopoulos < > > [email protected]> wrote: > > > >> Very nice, Linda, thanks. > >> That's just the example I needed. > >> > >> I think I'm beginning to get the 'geist' of it now! > >> > >> (Lambda considered harmful? LOL) > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
