QED
The origin and history of QED.
Etymology
An initialism of quod erat demonstrandum, 'which was to be demonstrated', itself a translation of the formula used by Greek mathematicians such as Euclid.
The origin and history of QED.
An initialism of quod erat demonstrandum, 'which was to be demonstrated', itself a translation of the formula used by Greek mathematicians such as Euclid.