It is rare that such a widely used and basic theorem can be deepened after such a long time. (In this case, something even more unusual happened.
Ito ay bihira na ang tulad ng isang malawak na ginamit at basic teorama ay maaaring deepened matapos tulad ng mahabang panahon. (Sa kasong ito, isang bagay na mas di-pangkaraniwang nangyari.