Talk:World manifold

	Physics portal This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.PhysicsWikipedia:WikiProject PhysicsTemplate:WikiProject Physicsphysics
Low	This article has been rated as Low-importance on the project's importance scale.
	This article is supported by the relativity task force.

relation to worldsheet

Latest comment: 9 years ago1 comment1 person in discussion

Is this the same as worldsheet? Can the two articles be effectively merged? If not, they probably need hatnotes disambiguating themselves from the other. — Preceding unsigned comment added by 75.139.254.117 (talk) 17:35, 23 December 2016 (UTC)Reply

necessary for the existence of a pseudo-Riemannian metric?

Latest comment: 6 years ago1 comment1 person in discussion

In the article it is said, that paracompactness is necessary for the existence of a pseudo-Riemannian metric. Is that really true? Why can't there be a pseudo-Riemannian metric if the manifold is not paracompact? --129.13.187.218 (talk) 08:38, 19 December 2019 (UTC)Reply