mathematicians customarily use the = sign as they use the word ‘is’ in English: Aristotle is a man, but a man isn’t necessarily Aristotle.
Donald Knuth quoted on the wikipedia page for Big O Notation
Regis Frey is a boy who makes stuff and puts it on the web. This is a chronicle of things he finds interesting.
mathematicians customarily use the = sign as they use the word ‘is’ in English: Aristotle is a man, but a man isn’t necessarily Aristotle.