# Two Subscript/Superscript questions

In mathematica code, I have a table of quantities that involve subscripts and superscripts. I need to put short text titles in the first row of the table. Suppose I have index1="A", index2="B", and index3="C", where A, B, and C are undefined symbols. (Later I might change A, B, and C to different symbols like $$\mu,\nu$$, and $$\gamma$$.)

Question 1. I desire an output of $$\Gamma_{BC}^A \dot{x}^B\dot{x}^C$$. I want to use an expression using index1, index2, and index3. I have tried things like ToExpression["$$\Gamma_{index2 index3}^{index1}\dot{x}^{index2} \dot{x}^{index3}$$"].

Question 2. I desire an output of $$\partial_B$$ $$g_{CA}$$ + $$\partial_C$$ $$g_{AB}$$. As above, I have tried many variations of $$\partial_{index2}$$ $$g_{index3 index1}$$ + $$\partial_{index3}$$ g$$_{index1 index2}$$.

Style[Row[{Subsuperscript[\[CapitalGamma], #2 #3, #1],
Superscript[OverDot[x], #2],
Superscript[OverDot[x], #3]}] & @@ {A, B, C}
, 20] // TraditionalForm


$$\Gamma _{B C}^A\dot{x}^B\dot{x}^C$$

Style[Row[{Subscript[\[Delta], #2], Subscript[g, #2 #3], " + ",
Subscript[\[Delta], #3], Subscript[g, #1 #2]}] & @@ {A, B, C}
, 20] // TraditionalForm


$$\delta _Bg_{B C}\text{ + }\delta _Cg_{A B}$$

• This is great!. Thank you. I learned that "Row" mimics an expression where I control the arrangement rather than being dependent on the natural expression ordering of characters. And, I learned the &@@ trick to get A, B, and C to print out rather than index1, index2, etc. I was able to simplify your first answer, bypassing the &@@ trick, and I eventually was able to use del instead of delta in the 2nd one. I'll try to post my actual equations eventually. I don't think I can post them in a comment. Should I post them in "Answer Your Question" even though you have answered it? Nov 8, 2023 at 2:47
• Thanks for the accept. I am glad I was able to help. The question can be answered to the extent of the details provided in the OP. It is therefore recommended to provide a minimal example. If your solution is different from this one, the site policy encourages you to share it. Have a nice day.
– Syed
Nov 8, 2023 at 2:59
• On 2nd thought my answers are similar enough not to post. Thanks again. Nov 8, 2023 at 3:52