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Once a small subfield of geometric topology, the theory of 3-manifolds has experienced tremendous growth in the latter half of the 20th century. The methods used tend to be quite specific to three dimensions, since different phenomena occur for 4-manifolds and higher dimensions.
Category:Knot theory may also be of interest because of the substantial overlap in content.
The following 75 pages are in this category, out of 75 total. This list may not reflect recent changes (learn more).