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The Cohomology of (Λ2X, ΔX)
Published online by Cambridge University Press: 20 November 2018
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Let X be any connected C.W. complex. Let Λ2X be the 2-fold symmetric product of X, the set of unordered pairs (not necessarily distinct) of elements of X. Let ΔX ⊂ X2 be the diagonal, and also (by a slight abuse of notation) let ΔX ⊂ Λ2X also denote the set of unordered pairs {x, x}.
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- Copyright © Canadian Mathematical Society 1973
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