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
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 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
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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
Duh. It's the 'frame' option. Hadn't seen that before; sorry for the noise.
john perry
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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
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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
This is a bug, can you please open a ticket and post it on sage-devel?
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