Taking that as the definition, this definitely is not the first formal language learnable in 1-2 hours. I would think, for example, that the language consisting of just the empty string is older and learnable in 1-2 hours.
They probably mean something like “formal language used for writing mathematical proofs that is (about) as powerful as Lean”, though.
Taking that as the definition, this definitely is not the first formal language learnable in 1-2 hours. I would think, for example, that the language consisting of just the empty string is older and learnable in 1-2 hours.
They probably mean something like “formal language used for writing mathematical proofs that is (about) as powerful as Lean”, though.