90 research outputs found
On open books for nonorientable 3-manifolds
We show that the monodromy of Klassen's genus two open book for is the -homeomorphism of Lickorish, which is also known as the crosscap
slide. Similarly, we show that admits a genus two
open book whose monodromy is the crosscap transposition. Moreover, we show that
each of and admits infinitely
many isomorphic genus two open books whose monodromies are mutually
nonisotopic. Furthermore, we include a simple observation about the stable
equivalence classes of open books for and . Finally, we formulate a version of Gabai's theorem
about the Murasugi sum of open books, without imposing any orientability
assumption on the pages.Comment: Final version, to appear in Periodica Mathematica Hungaric
Explicit horizontal open books on some Seifert fibered 3--manifolds
We describe explicit horizontal open books on some Seifert fibered
3--manifolds. We show that the contact structures compatible with these
horizontal open books are Stein fillable and horizontal as well. Moreover we
draw surgery diagrams for some of these contact structures.Comment: 13 page
Embedding fillings of contact 3-manifolds
In this survey article we describe different ways of embedding fillings of
contact 3-manifolds into closed symplectic 4-manifolds.Comment: 25 pages, 12 figure
On the Heegaard genus of contact 3-manifolds
It is well-known that Heegaard genus is additive under connected sum of
3-manifolds. We show that Heegaard genus of contact 3-manifolds is not
necessarily additive under contact connected sum. We also prove some basic
properties of the contact genus (a.k.a. open book genus) of 3-manifolds, and
compute this invariant for some 3-manifolds
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