I've seen (and used) \mathbb{P} and \mathbb{E} for the probability & expectation...

		nephanth on July 25, 2023 \| parent \| context \| favorite \| on: Unicode Character “𝕏” (U+1D54F) I've seen (and used) \mathbb{P} and \mathbb{E} for the probability & expectation operators (so not really a "concrete" object in your sense?)