Re: [sage-support] Coercion problem

2015-01-15 Thread Robert Bradshaw
I assume you meant sage: v = P(5) sage: v(oo) A positive finite number This is because the elements of QQ coerce to the parent of oo, which is the "signed infinity ring." This is so we have sage: P. = PolynomialRing(QQ) sage: w = x + 5 sage: v = w - x w(1.0) 6.00 sage: v(1.0) 5.0

[sage-support] Coercion problem

2015-01-15 Thread michalg0x5a
I recently sumbled at following behaviour: sage: P. = PolynomialRing(QQ) sage: w = x + 1 sage: w(oo) + Infinity sage: v = 5 sage: v(oo) A positive finite number This behaviour is strange (altough works as desined). For nonconstant polynomial it has the same effect as calculating limit, for consta

[sage-support] Bug in polynomial evaluation code

2015-01-15 Thread michalg0x5a
Sage acts strange when it encouters infinity and constant polynomial. Try this sage: P. = PolynomialRing(QQ) sage: w = P(1) sage: w(oo) A positive finite number While for nonconstant polynomial: sage: v = x sage: v(oo) +Infinity -- You received this message because you are subscribed to the Go

[sage-support] substitution in exterioralgebra

2015-01-15 Thread Daniele Angella
hi, i've encountered a problem in performing substitution in ExteriorAlgebra. i have > E.=ExteriorAlgebra(QQ) and i'd like to perform the substitution, e.g., {x:y} on any expression representing an element in E: for example, > x.subs({x:y}) but it returns "x", meaning the substitution is not app

[sage-support] Re: 3d plot without axes

2015-01-15 Thread john_perry_usm
Duh. It's the 'frame' option. Hadn't seen that before; sorry for the noise. john perry -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@

[sage-support] Re: 3d plot without axes / bounding box

2015-01-15 Thread john_perry_usm
Actually, maybe it's the bounding box I'm seeing. Either way, I want just the object itself (e.g., a sphere), not any lines or boxes added by Sage or the viewers. john perry -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from

[sage-support] 3d plot without axes

2015-01-15 Thread john_perry_usm
Hello! In 2d, it's easy to create a plot without axes: either show(p,axes=False) or p.axes(False). In 3d, this fails silently with the show command, while the dot-command is rejected outright. I would like to produce 3d plots without axes. Is there a way to suppress the generation of axes in

[sage-support] Fraction field with local orderings

2015-01-15 Thread mmarco
This is a bug, can you please open a ticket and post it on sage-devel? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com.