Comment #32 on issue 3128 by trel...@psu.edu: Sum and Product manipulations
http://code.google.com/p/sympy/issues/detail?id=3128
Right. The notation of defining sums with just the limits of the sum is
ambiguous (hence, bad notation). Reasonable people may disagree about
the "right" interpretation, and the "best choice" can depend on context.
If I had a multiset compose of the join of sets of integers between -2+k
and 2-k, for k=0..4, __I__ would expect
Sum((Sum(1,(i,-2+k,2-k))),(k,0,4)).doit()
to return the size of the multiset == # of x's in
0 | x x x x x
1 | x x x
2 | x
3 | x x x
4 | x x x x x
---+----------------------
|-3 -2 -1 0 1 2 3
But the best design choice should be whatever makes the users most
comfortable and productive.
--
You received this message because this project is configured to send all
issue notifications to this address.
You may adjust your notification preferences at:
https://code.google.com/hosting/settings
--
You received this message because you are subscribed to the Google Groups
"sympy-issues" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sympy-issues+unsubscr...@googlegroups.com.
To post to this group, send email to sympy-issues@googlegroups.com.
Visit this group at http://groups.google.com/group/sympy-issues.
For more options, visit https://groups.google.com/groups/opt_out.
