Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
If and only if.
- ‘Thus the sentence ‘Snow is white’ is true iff it corresponds to the fact that snow is white.’
- ‘Let us say that I could have rendered a proposition false in the weak sense iff I was able to do something such that, if I did it, the proposition would have been falsified (though not necessarily by my act, or by any event caused by my act).’
- ‘The truth conditions for negation are: A is true iff A is not true.’
- ‘Let the letter ‘M’ represent this operator, and add to the axioms of classical propositional logic the modal axiom M (p v q) iff Mp v Mq.’
- ‘Minimalism allows us to generate a minimal truth condition for any meaningful indicative sentence, such as ‘Lying is wrong’ is true iff lying is wrong.’
1950s: arbitrary extension of if.
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.