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- W4300720721 abstract "In this paper we show that certain universal homology classes which are fundamental in topology are algebraic. To be specific, the products of Eilenberg-MacLane spaces ${cal K}_{2q} equiv K({Bbb Z},2) times K({Bbb Z}, 4) times ... times K({Bbb Z}, 2q)$ have models which are limits of complex projective varieties. Precisely, we have ${cal K}_{2q} = lim_{dtoinfty}{cal C}_d^q({Bbb P}^n)$ where ${cal C}_d^q({Bbb P}^n)$ denotes the Chow variety of effective cycles of codimension $q$ and degree $d$ on ${Bbb P}^n$. It is natural to ask which elements in the homology of ${cal K}_{2q}$ are represented by algebraic cycles in these approximations. In this paper we find such representations for the even dimensional classes known as Steenrod squares (as well as their Pontrjagin and join products). These classes are dual to the cohomology classes which correspond to the basic cohomology operations also known as the Steenrod squares." @default.
- W4300720721 created "2022-10-04" @default.
- W4300720721 creator A5062332468 @default.
- W4300720721 date "2016-06-17" @default.
- W4300720721 modified "2023-10-14" @default.
- W4300720721 title "Algebraic Cycles Representing Cohomology Operations" @default.
- W4300720721 doi "https://doi.org/10.48550/arxiv.1606.05617" @default.
- W4300720721 hasPublicationYear "2016" @default.
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