#7660: arithmetic with equations and inequalities confusing
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Reporter: burcin | Owner: burcin
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: symbolics | Resolution:
Keywords: inequality, | Merged in:
solver, maxima | Reviewers:
Authors: Burcin Erocal, | Work issues:
Ralf Stephan | Commit:
Report Upstream: N/A | 30cc86077172f9e57c6b5df06b40158e17e2320d
Branch: u/rws/ticket/7660 | Stopgaps:
Dependencies: |
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Comment (by jdemeyer):
Replying to [comment:31 rws]:
> * `f(a==b)` --> `f(a==b)`
What does `f(a==b)` even mean? I would go for `f(a) == f(b)`.
> relations:
> * `(a<b) */ c` same as:
> - `a*/c > b*/c` for `c` real and negative, or if `c` is assumed
negative
> - `a*/c < b*/c` for `c` real and positive, or if `c` is assumed
positive
> - `False` if `c=0`
What if neither of the above conditions is true? `raise ArithmeticError`
in that case?
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Ticket URL: <http://trac.sagemath.org/ticket/7660#comment:32>
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