# Symbols:Division/Historical Note/Mistake

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## Source Work

2008: David Nelson: *The Penguin Dictionary of Mathematics* (4th ed.):

**division sign**

## Mistake

*The alternative sign $/$ ... was recommended by William de Morgan in $1845$ to simplify the printing of fractions.*

## Correction

William De Morgan, born $1839$, was the son of Augustus De Morgan, and as he was aged $6$ at the time, could not have been designing printed material.

It is assumed that Augustus De Morgan himself was meant here.

## Sources

- 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next):**division sign**