Chat with our AI personalities
"Proofs are fun! We love proofs!"
An arbitrary term, or placeholder. It is used in general proofs to indicate 'up to whatever desired maximum term'.
All of them. Only some are too complicated for high school students, or even undergraduates.
Practice them. You need to do many of them and do them over and over again.
I'm not very sure but I know there is over 300.