CTAN has a new package: fouridx
This package enables left subscripts and superscripts in math mode. These subscripts and superscripts are automatically raised for better fitting to the symbol they belong to. This is done in such a way that the left and right subscripts and superscripts are set on the same line, respectivly.
This package is located at http://tug.ctan.org/tex-archive/macros/latex/contrib/fouridx . More information is at http://tug.ctan.org/pkg/fouridx (if the package is new it may take a day for that information to appear). We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .
fouridx – Left sub- and superscripts in maths mode
The package enables left subscripts and superscripts in maths mode. The sub- and superscripts are raised for optimum fitting to the symbol indexed, in such a way that left and right sub- and superscripts are set on the same level, as appropriate.
The package provides an alternative to the use of the \sideset command in the amsmath package.
|Copyright||2008, 2013 Stefan Karrmann|