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A Remark on (π, n)-Type CW-Complexes
Published online by Cambridge University Press: 22 January 2016
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Let X be a space whose i-th homotopy group πi(X)vanishes for every i ≧ 0 except i = n ≧ 1, and whose n-th homotopy group is isomorphic to a group π. Then it is well known that the polyhedral homotopy type of X is completely determined by π and n. We call such a space a (π, n)-type space. Also it is well known that the minimal complex of the singular complex of a (π, n)-type space is isomorphic to the complex K(π, n)defined by S. Eilenberg and S. MacLane [1]. We know also that for any n ≧ 1 and any group π(abelian if n > 1) there exists a (π, n)-type space (See [6]).
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- Copyright © Editorial Board of Nagoya Mathematical Journal 1957