Sentence 1: If their are all zero , then this is classical Liouville equation ( for a closed system ) , which is the quantum analog of the quantum Liouville equation .
Sentence 2: If all are zero , then this is the quantum - Liouville - equation ( for a closed system ) , which is the quantum analogue of the classic Liouville equation .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?