# Ahmad Issa

**Email:** aissa at math dot utexas dot edu

**Office:** RLM 11.134

I'm a sixth year graduate student in mathematics at the University of Texas at Austin, expecting to graduate in May 2019. My advisor is Cameron Gordon. I'm interested in 3- and 4-dimensional topology, especially using smooth obstructions such as Donaldson's theorem and those from Heegaard Floer homology to answer questions about knots and 3-manifolds. I am also interested in triangulations of 3- and 4-manifolds.

Before coming to Austin, I studied at the University of Melbourne in Australia where I completed a Master of Science under the supervision of Craig Hodgson.

## Articles/Writing

**Smoothly embedding Seifert fibered spaces in S^4**, joint with Duncan McCoy.

( arXiv )

**The realization problem for non-integer Seifert fibered surgeries**, joint with Duncan McCoy.

( arXiv )

**On Seifert fibered spaces bounding definite manifolds**, joint with Duncan McCoy.

( arXiv )

**Triangulating Cappell-Shaneson homotopy 4-spheres** -- MPhil Thesis (2017)

( pdf )

**The classification of quasi-alternating Montesinos links**, *Proc. Amer. Math. Soc. 146 (2018), 4047-4057*.

( arXiv | journal )

**Non-geometric veering triangulations**, joint with Craig Hodgson and Henry Segerman,

*Exp. Math. 25 (2016), no. 1, 17-45*.

(

arXiv |

journal )

**Non-geometric veering triangulations** -- MSc thesis.

( pdf )

## Talks/Slides

Non-geometric veering triangulations. (

beamer slides)

Oklahoma State University - Topology Seminar, March 14th 2014.

Embedding 3-manifolds in the 4-sphere. (beamer slides)

University of Texas at Austin - Candidacy talk, May 2nd 2016.

## Computer programs

Veering is a computer program which can be used to construct veering triangulations of mapping tori as introduced by Ian Agol.