Talk:Boundary parallel

Unclear lead - wrong links?

The text Template:Tqq is unclear for several reasons:

• Boundary (topology) pertains to a subset of a topological space; the topological boundary of the entire space is the empty set. Should that be Manifold#Boundary and interior?
• Homotopy#Isotopy pertains to a pair of functions
• The pair of links boundary component violates WP:SOB

I considered Template:Tqq, but that seems stilted and doesn't address the second issue.

How about Template:Tqq

Is the concept of components of the boundary of a manifold with boundary important enough to warrant a section or anchor somewhere? Note that boundary component links to the wrong definition and probably should be a DAB page.

-- Shmuel (Seymour J.) Metz Username:Chatul (talk) 08:23, 12 June 2025 (UTC) -- Revised 13:12, 12 June 2025 (UTC)