𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the Heegaard genus and tri-genus of non-orientable Seifert 3-manifolds

✍ Scribed by Víctor Núñez

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
251 KB
Volume
98
Category
Article
ISSN
0166-8641

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

On the orientable genus of graphs embedd
On the orientable genus of graphs embedded in the klein bottle
✍ Neil Robertson; Robin Thomas 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 560 KB

## Abstract Let __G__ be a graph embedded in the Klein bottle with “representativity” at least four. We give a formula for the orientable genus of __G__, which also implies a polynomially bounded algorithm. The formula is in terms of the number of times certain closed curves on the Klein bottle int

On Sectional Genus of Quasi—Polarized Ma
On Sectional Genus of Quasi—Polarized Manifolds with Non-Negative Kodaira Dimension
✍ Yoshiaki Fukuma 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 369 KB

Let X be a smooth projective variety over C and L be a nef-big divisor on X. Then ( X , L ) is called a quasi-polarized manifold. Then we conjecture that g ( L ) 2 q ( X ) , where g ( L ) is t.he sectional genus of L and q ( X ) = dim H 1 ( O x ) is the irregularity of X . In general it is unknown I