I've just seen someone using the symbol φ for the empty set.
I need to go and have a lie down.

34 favourites 0 retweets

In reply to @christianp

victorians: demonstrate refined sensibilities by falling gravely ill when presented with the wrong cutlery

me: six-week catatonic state brought on by overfull hbox

9 favourites 0 retweets

View this tweet on twitter.com

This tweet as JSON