Symbols:Abbreviations/Q/QEI
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Abbreviation: QEI or Q.E.I.
The initials of quod erat inveniendum, which is Latin for which was to be found.
These initials were traditionally added after the completion of a calculation (either arithmetic or algebraic).
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): QEI
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): QEI