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By Jean-Paul Brasselet, José Seade, Tatsuo Suwa. One has often to face problems where the underlying space is no more a manifold but a singular variety. Schwartz and R. MacPherson. The Case of Manifolds.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.