## Abstract

In this article we mostly study algebraic properties of n-dimensional \cyclic" compacta lying either in products of n curves or in the nth symmetric product of a curve. The basic results have been obtained for compacta admitting essential maps into the n-sphere Sn. One of the main results asserts that if a compactum X admits such a mapping and X embeds in a product of n curves then there exists an algebraically essential map X → Tn into the n-torus; the same conclusion holds for X embeddable in the nth symmetric product of a curve. The existence of an algebraically essential mapping X Tn is equivalent to the existence of some elements a1; ⋯ an 2 H1(X) whose cup product a1 ⋯ an 2 Hn(X) is not zero, and implies that rankH1(X) n and catX > n. In particular, it follows that Sn, n ≥ 2, is not embeddable in the nth symmetric product of any curve. The case n = 2 answers in the negative a question of Illanes and Nadler.

Original language | English |
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Pages (from-to) | 611-641 |

Number of pages | 31 |

Journal | Houston Journal of Mathematics |

Volume | 38 |

Issue number | 2 |

Publication status | Published - 2012 Dec 1 |

Externally published | Yes |

## Keywords

- Cohomology groups
- Embeddings
- Products
- Symmetric products

## ASJC Scopus subject areas

- Mathematics(all)