## Abstract We compute the following upper bounds for the maximal arithmetic genus __P~a~(d,t__) over all locally Cohen โ Macaulay space curves of degree __d__, which are not contained in a surface of degree magnified image These bounds are sharp for t โค 4 abd any d โฅ t.
Some bounds for the regular genus of PL-manifolds
โ Scribed by Rossana Chiavacci; Giuseppe Pareschi
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 928 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0012-365X
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โฆ Synopsis
This paper is devoted to extend some well-known facts on the genus of a surface and on the Heegaard genus of a 3-manifold to manifolds of arbitrary dimension. More precisely, we prove that the genus of non-orientable manifolds is always even and we compare the genus of a manifold with the rank of its fundamental group and with the genus of its boundary.
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