[Axiom-developer] [#8 (Savannah bug #9297) output misses some parenthesis]

[kratt6]

Changes 
http://page.axiom-developer.org/zope/mathaction/8SavannahBug9297OutputMissesSomeParenthesis/diff
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--removed:
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-> >  > #3148:  bug #9216 differentiating sums with respect to a 
-> > bound is wrong [A]
-> > 
-> > in my opinion correct beyond doubt.
-> 
-> In the patch report you wrote:
-> 
-> "Mathematically axiom produces correct output now, however
-> I'm not sure whether my patch is best possible.
-> 
-> Maybe there should be a function D in OutputForm that displays
-> unevaluated differentiation. Also, I find it ugly to use the
-> raw %diff operator in COMBF. Furthermore, is it necessary to
-> substitute a dummy variable for the variable of differentiation?"
-> 
-> I am concerned that this is another case of a "quick fix" for
-> which we should consider a more general solution of the kind
-> that you suggest above.
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