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Topic: Subscript on plus expression
Replies: 16   Last Post: Dec 3, 2012 3:18 AM

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Dave Snead

Posts: 50
Registered: 12/13/04
Superscript on plus expression
Posted: Nov 27, 2012 3:39 AM
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Hi,

Mathematica fails to parenthesize the a+b in Superscript[Plus[a,b],k]
so the output looks identical to
Plus[a,Superscript[b,k]]

Previous suggestions that worked to fix a similar problem for the Subscript
case, i.e.,

Format[Subscript[arg_Plus, k_]] :=
Subscript[
"(" <> StringJoin @@ Riffle[ToString /@ (List @@ arg), " + "] <>
")", k]

and

MakeBoxes[Subscript[(head : (Plus | Times))[args__], k_],
form : (StandardForm | TraditionalForm)] :=
InterpretationBox[#1, #2] & @@ {SubscriptBox[
RowBox[{"(", ToBoxes[head[args], form], ")"}], ToBoxes[k, form]],
Subscript[head[args], k]}

don't carry over analogously to the Superscript case!

Format[Superscript[arg_Plus, k_]] :=
Superscript[
"(" <> StringJoin @@ Riffle[ToString /@ (List @@ arg), " + "] <>
")", k]

and

MakeBoxes[Superscript[(head : (Plus | Times))[args__], k_],
form : (StandardForm | TraditionalForm)] :=
InterpretationBox[#1, #2] & @@ {SuperscriptBox[
RowBox[{"(", ToBoxes[head[args], form], ")"}], ToBoxes[k, form]],
Superscript[head[args], k]}

don't work!


How can I get Mathematica to parenthesize the sum in
Superscript[Plus[a,b],k] ?

Thanks in advance,
Dave Snead








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