In mathematics, and particularly homology theory, Steenrod's Problem (named after mathematician Norman Steenrod) is a problem concerning the realisation of homology classes by singular manifolds. == Formulation == Let M {\displaystyle M} be a closed, oriented manifold of dimension n {\displaystyle n} , and let [ M ] ∈ H n ( M ) {\displaystyle [M]\in H_{n}(M)} be its orientation class.
In mathematics, and particularly homology theory, Steenrod's Problem (named after mathematician Norman Steenrod) is a problem concerning the realisation of homology classes by singular manifolds. == Formulation == Let M {\displaystyle M} be a closed, oriented manifold of dimension n {\displaystyle n} , and let [ M ] ∈ H n ( M ) {\displaystyle [M]\in H_{n}(M)} be its orientation class.
Source: Wikipedia "Steenrod problem" · CC BY-SA 4.0
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