# Xiudi Tang 唐修棣

I am a Postdoctoral Fellow at Department of Mathematics, University of Toronto with my mentors Yael Karshon and Marco Gualtieri after begin a Visiting Assistant Professor at Cornell University with my mentor Reyer Sjamaar.

I received my PhD in mathematics at University of California San Diego supervised by Álvaro Pelayo in 2018 and a BS in mathematics from Tsinghua University in 2014.

My email addresses are xiudi dot tang at utoronto dot ca & xdtang dot math at gmail dot com.
Take a look at my CV and find the preprints of most of my articles on my arXiv profile.

I am teaching MAT137: Calculus! for Fall 2019. My office is at DH 3019.

## Research Interests

- differential geometry
- symplectic geometry
- integrable systems
- symplectic/Hamiltonian group actions
- noncompact symplectic manifolds

- volume-preserving diffeomorphisms

## Preprints

[6] Semitoric systems of non-simple type (with Joseph Palmer, Álvaro Pelayo), arXiv:1909.03501. [PDF] [Abstract]

[5] Removing a ray from a noncompact symplectic manifold, arXiv:1812.00444. [PDF] [Abstract]

[4] Vũ Ngọc’s Conjecture on focus-focus singular fibers with multiple pinched points (with Álvaro Pelayo), arXiv:1803.00998. [PDF] [Abstract]

## Publications

[3] Symplectic stability on manifolds with cylindrical ends (with Sean Curry, Álvaro Pelayo), Journal of Geometric Analysis 29(2):1660–1675, 2019.

[2] Moser stability for volume forms on noncompact fiber bundles (with Álvaro Pelayo), Differential Geometry and its Applications 63:120–136, 2019.

[1] Moser-Greene-Shiohama stability for families (with Álvaro Pelayo), to appear in Journal of Symplectic Geometry.

## Past Teaching

### Cornell University

Math 1920: Multivariable Calculus for Engineers, *Summer 2019*

Math 1120: Calculus II, *Spring 2019*

Math 1110: Calculus I, *Fall 2018*

### University of California San Diego

Math 20E: Vector Calculus*, *Spring 2018*

Math 155A: Geometric Computer Graphics*, *Winter 2018*

Math 102: Applied Linear Algebra*, *Fall 2017*

Math 20E: Vector Calculus, *Summer II 2017*

Math 240C: Real Analysis III*, *Spring 2016*

Math 240B: Real Analysis II*, *Winter 2016*

Math 240A: Real Analysis I*, *Fall 2015*

Math 20B: Calculus for Science and Engineering*, *Fall 2015*

Math 20E: Vector Calculus*, *Summer I 2015*

Math 20C: Calculus and Analytic Geometry for Science and Engineering*, *Spring 2015*

Math 20E: Vector Calculus*, *Winter 2015*

* *Teaching Assistant*

## Who I am and Who I am not

```
I am a thinking human being.
I am not a working machine.
```

Last updated 2019/10/19.

© 2019 Xiudi Tang