I need to know how to use Nemeth Braille to express tensor notation such as: (capital R followed by a subscript i, followed by a superscript j, followed by a subscript k, and followed by a subscript l - where each subscript and superscript is in its own horizontal spacing). Note that it is different than (capital R subscript i superscript j subscript k subscript l - where the both the superscript j and the subscript i are positioned next to the letter R; the j being vertically above the i).
The 1972 Nemeth Braille Code for Mathematics and Science Notation does not cover tensor indices notation (sometimes referred to as abstract index notation or slot-naming index notation). Visually it involves having a letter at base followed by zero or more pairs of vertically-aligned subscripts and superscripts where the horizontal spacing matters. Each pair of a subscript and superscript is like a matrix entry and some of them may be blank. Without indication of the spacing, location information is lost.
<mi> R </mi>
<mi> i </mi>
<mi> j </mi>
<mi> k </mi>
<mi> l </mi>
Any help is greatly appreciated!