# Jason Zesheng Chen's Homepage

why, hello, nice to see you here!

Vanishing in the polar limit under the Celsius measure (sorry, hehe)

My name is Zesheng Chen; my friends and family call me Jason. I am a PhD candidate at the Deparment of Logic and Philosophy of Science, UC Irvine. My advisor is Toby Meadows.

As a logician, I study the relationship between computation, complexity, and exorbitantly large infinities: if an object can be easily computed/defined, must it behave nicely? Such questions have intricate connections with what’s known as large cardinals.

As a philosopher, I analyze the ways mathematicians (scientists) consider mathematical (scientific) facts as evidence for the merits of certain extra-mathematical (extra-scientific) theses.

I approach these topics mostly from the viewpoint of set theory and recursion theory, focusing on how theories of commonplace mathematics (such as the theory of computation) can often be lifted to higher mathematics (such as the theory of projective sets) under appropriate assumptions of the aforementioned large cardinals, as well as what sorts of conclusions we ought to draw from this phenomenon.

I also specialize in the history of set theory, especially descriptive set theory from its emergence to the present. Curiously, this line of research has made me somewhat competent in the history of mathematics, logic, and computer science in the Soviet Union.

Born and raised in Shenzhen, China, I went to University of Southern California as an undergrad, where I studied linguistics, philosophy, and Middle Eastern languages. In my spare time I sometimes do a bit of expository writing for the general public. Below you can find some of my social media.