Sentence 1: Since a Hausdorff space is the same as a preregular T space , a regular space which is also T must be Hausdorff ( and thus T ) .
Sentence 2: Since a house village - space is the same as a preregular T - space , a regular space , which is also T , must be Hausdorff ( and thus T ) .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?