Margarida Mendes Lopes, Rita Pardini
Published 2005-05-11, updated 2006-02-14Version 2
In this note it is shown that, given a smooth minimal complex surface of general type S with p_g(S)=0, K^2_S=3, for which the bicanonical map is a morphism, then the degree of the bicanonical map of S is not equal to 3. This completes our earlier results, showing that if X is a minimal surface of general type with p_g=0, K^2>=3 such that |2K_X| is free, then the bicanonical map of X can have degree 1, 2 or 4.
Comments: Final version to appear in Proceedings of the AMS
A connected component of the moduli space of surfaces of general type with $p_g=0$
Surfaces of general type with $p_g=q=1, K^2=8$ and bicanonical map of degree 2
A survey on the bicanonical map of surfaces with $p_g=0$ and $K^2\ge 2$
![QR code for arXiv:math/0505231 [math.AG]](http://oss.arxitics.com/images/favicon.svg)