[sage-support] Sage 7.6 compilation - gsl and r failures on Linux

Sorry if a similar message previously appeared on this group. I'm assuming that it didn't get posted for some reason. OS: Linux (kernel 4.10.0 / distro: Ubuntu 17.10) GCC version: 7.0.0 20161202 experimental (built from source) error message for gsl: checking host system type... x86_64-unknown-

[sage-support] Re: A possible slight addition to symbolic sum operations

This is now Trac#22915 , which needs discussion. -- Emmanuel Charpentier Le mercredi 26 avril 2017 08:35:30 UTC+2, Emmanuel Charpentier a écrit : > > Sage can (awkwardly) do some simplifications of symbolic sums. For example > > sage: var("j,p", domain="in