Re: [sage-devel] subs semantic

2015-12-06 Thread Jonas Jermann
Hi +1 by me. How is the order of variables for "call" determined? How would this work for SR? Regards Jonas On 06.12.2015 15:24, Vincent Delecroix wrote: Hello, We have substitution available for various objects (e.g. matrices when the base ring is a polynomial ring). I would like to fix the

[sage-devel] Change of logic regarding symbolic expressions in Sage 6.10.beta7

2015-12-06 Thread Eric Gourgoulhon
Hi, In Sage 6.10.beta7: sage: bool(x == 0) False sage: bool(x != 0) True sage: x = SR.var('x', domain='real') sage: bool(x == 0) False sage: bool(x != 0) False The latest output differs from what one would get from Sage 6.10.beta6 (and any previous version of Sage), which would have been True, i.

[sage-devel] subs semantic

2015-12-06 Thread Vincent Delecroix
Hello, We have substitution available for various objects (e.g. matrices when the base ring is a polynomial ring). I would like to fix the conventions of the parent of my_object.subs(var1=val1, var2=val2) versus my_object(var1=val1, var2=val2) With .subs, univariate polynomial ring someh