Wolfram on combinators:
https://writings.stephenwolfram.com/2020/12/combinators-a-ce...
not any simpler, but maybe these are:
https://en.wikipedia.org/wiki/Iota_and_Jot
Wolfram on combinators:
https://writings.stephenwolfram.com/2020/12/combinators-a-ce...
not any simpler, but maybe these are:
https://en.wikipedia.org/wiki/Iota_and_Jot