[Karen K. Bird]

Is there a braille symbol to represent a time derivative of a vector? The instructor represents this concept in the following way: for vector p, the letter p with an arrow pointing to the right on top, and, centered above that, a dot (of the sort used to indicate multiplication between two elements).

[Lindy Walton]

Without seeing a print example, I can only guess, but your description sounds like what the Nemeth code calls “Modifiers of Higher Order” in Section 87. Use the 5-step rule for transcribing modified expressions. The arrow will be the first order (modified directly over) and the dot will be the second order (two directly-over indicators). Use a contracted arrow and dots 16 for the dot.

[Karen K. Bird]

Thanks very much, Lindy.

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