>his bra-ket notation kind of mindfucked the mathematicians of his time as well
I find this very hard to believe. He found a clever way to notate vectors, dual vectors, inner and outer products. It's cool notation, but it doesn't reveal anything that isn't already well understood. It sure helps get brainlet physicists up to speed on their linear algebra though.
James Lee
No one knew what a the dirac delta function was until the late 40s.
Julian Butler
Ah yes, the Dirac Delta """Function"""
That is a good example along the lines of the OP. Super important for quantum mechanics.
Isaac Richardson
>No one knew what a the dirac delta function was until the late 40s. Including Dirac. He simply posited what would be required, and mathematicians came up with the solution, as always. Physicists are brainlets.