How to "import" the mtpro2 partial (vardelta) symbol?

Question

So I want to obtain the mtpro2 partial symbol without loading \usepackage[lite]{mtpro2} directly, because I find the spacing of mtpro2 quite ugly. So I would rather stick with \usepackage{newtxmath,newtxtext} but would like to call the \partial symbol from mtpro2.

I've already looked inside the mtpro2 lite documentation, however I cannot find what I'm looking for. I do not know how to call this symbol in particular.

Does anyone know if it is possible to call only \partial or its equivalent \vardelta from the mtpro2 font.

Welcome to TeX.SX! newtxmath has an \uppartial symbol that is similar to mtpro2's \partial symbol. — Vincent, Oct 06 '21 at 16:57
Take a look at this proven method: Importing a single symbol from a different font — barbara beeton, Oct 06 '21 at 17:02
Thank you so much for you replies. I found a rather neanderthal way of importing my symbol. I posted my answer below my question in case anyway wants to see my ugly solution. Again, thank you all. — Oscar Bonfiglio L, Oct 06 '21 at 19:43

score 1 · Accepted Answer · edited Oct 06 '21 at 22:52

I found a way to directly import the \vardelta symbol from the mtpro2 lite package. It is a rather ugly way of doing this but it worked for me:

\DeclareFontSubstitution{LMP1}{mtt}{m}{it}
\DeclareFontFamily{LMP1}{mtt}{\skewchar\font45}
\DeclareFontShape{LMP1}{mtt}{m}{it}{<-7> mt2mif <7-9> mt2mis <9-> mt2mit}{}
\DeclareFontShape{LMP1}{mtt}{b}{it}{<-7> mt2bmif <7-9> mt2bmis <9-> mt2bmit}{}
\DeclareFontEncoding{LMP2}{}{}
\DeclareFontSubstitution{LMP2}{mtt}{m}{n}
\DeclareFontFamily{LMP2}{mtt}{\skewchar\font48}
\DeclareFontShape{LMP2}{mtt}{m}{n}{<-7> mt2syf <7-9> mt2sys <9-> mt2syt}{\skewchar\font32}
\DeclareFontShape{LMP2}{mtt}{b}{n}{<-7> mt2bsyf <7-9> mt2bsys <9-> mt2bsyt}{\skewchar\font32}
\DeclareFontShape{LMP2}{mtt}{eb}{n}{<-7> mt2hsyf <7-9> mt2hsys <9-> mt2hsyt}{\skewchar\font32}
\DeclareFontEncoding{LMP3}{}{}
\DeclareFontSubstitution{LMP3}{mtt}{m}{n}
\DeclareFontFamily{LMP3}{mtt}{}
\DeclareFontShape{LMP3}{mtt}{m}{n}{<->mt2exa}{}
\DeclareFontShape{LMP3}{mtt}{b}{n}{<->mt2bexa}{}
\DeclareFontShape{LMP3}{mtt}{eb}{n}{<->mt2hexa}{}
\DeclareFontFamily{U}{mtt}{\skewchar\font32}
\DeclareFontShape{U}{mtt}{b}{n}{<-7> mt2mbf <7-9> mt2mbs <9-> mt2mbt}{}% (MJ)
\DeclareSymbolFont{operators}   {\encodingdefault}{\rmdefault}{m}{n}
\DeclareSymbolFont{letters}     {LMP1}{mtt}{m}{it}
\DeclareSymbolFont{symbols}     {LMP2}{mtt}{m}{n}
\DeclareSymbolFont{largesymbols}{LMP3}{mtt}{m}{n}

And then simply add \DeclareMathSymbol{\partial}{\mathord}{letters}{178}. I'm more than sure that I do not need all of the above lines, but I am too lazy to see which lines are of use and which are not. Also, I hope that this does not affect certain other operators in my LaTeX. At least for now, everything is fine.

How to "import" the mtpro2 partial (vardelta) symbol?

1 Answers1