#8237: Sage does not recognize Maxima's complex ininity
----------------------------+-----------------------------------------------
Reporter: robert.marik | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone:
Component: symbolics | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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As subject says:
{{{
sage: maxima('inf').sage()
+Infinity
sage: maxima('infinity').sage()
+Infinity
}}}
From Maxima manual
{{{
Constant: inf
inf represents real positive infinity.
Constant: infinity
infinity represents complex infinity.
Constant: minf
minf represents real minus (i.e., negative) infinity.
}}}
As a cosequence, Sage fails to evaluate limit of 1/x at x=0. Maxima gives
correct result (complex infinity)
{{{
sage: maxima('limit(1/x,x,0)')
infinity
sage: maxima('limit(1/x,x,0)').sage()
+Infinity
sage: limit(1/x,x=0)
+Infinity
sage: maxima('limit(1/x,x,0,plus)')
inf
sage: maxima('limit(1/x,x,0,plus)').sage()
+Infinity
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8237>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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