Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
Two laws in Boolean algebra and set theory which state that AND and OR, or union and intersection, are dual. They are used to simplify the design of electronic circuits.
- ‘This completes the proof of the first of De Morgan's laws; the second is obtained by similar reasoning.’
- ‘In set theory, de Morgan's laws relate the three basic set operations to each other; the union, the intersection, and the complement.’
- ‘In logic, De Morgan's laws (or De Morgan's theorem), named for nineteenth century logician and mathematician Augustus De Morgan, are two powerful rules of Boolean algebra and set theory.’
- ‘de Morgan's laws are named after the Indian-born British mathematician and logician Augustus De Morgan (1806-1871).’
Early 20th century: named after Augustus De Morgan (1806–71), English mathematician, but already known (by logicians) as principles in the Middle Ages.
We take a look at several popular, though confusing, punctuation marks.
From Afghanistan to Zimbabwe, discover surprising and intriguing language facts from around the globe.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.