4 msΒ·
I've also seen πΈ for affine space, πΉ for the Booleans, π½ for a field, π for a field, π for octonions and π for surreals. I think I've seen π and π for
by OscarCunningham 6y ago
I've also seen πΈ for affine space, πΉ for the Booleans, π½ for a field, π for a field, π for octonions and π for surreals.
I think I've seen π and π for identity matrices and suchlike, and I'm sure π also gets some use.