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Pages

Posts

portfolio

publications

Subtle invariants of F-crystals

Journal of Ramanujan Mathematical Society, 2014

In this paper, we prove Vasiu’s conjecture that the isomorphism number of an F-crystal is equal to its level torsion.

The Number Line through Guided Inquiry

MAA Press: An Imprint of the American Mathematical Society, 2022

This is a real analysis textbook for future secondary teachers and general undergraudate mathematics major. This is a joint work with David M. Clark.

Arithmetic Partial Derivative

Journal of Integer Sequences, 2022

In this paper, we investigate the dynamical system of higher order of arithmetic partial derivatives. We show that there are infinitely many numbers with exactly n anti-partial derivatives for any nonnegative integer n. This is a joint work with Brad Emmons.

talks

teaching

Guidelines for letters of recommendation

General advice, Mathematics Department, Utica University, 2022

This page contains advice for people asking for a letter of recommendation from me (or someone like me).

MAT 151 Precalculus

Undergraduate course, Mathematics Department, Utica University, 2024

Welcome to the home page of Dr. Xiao Xiao’s Precalculus course at Utica University. You can find all the information and documents for this course on this page. Please check this page frequently for announcements and assignments.

MAT 201 Calculus 1

Undergraduate course, Mathematics Department, Utica University, 2024

Welcome to the home page of Dr. Xiao Xiao’s Calculus 1 course at Utica University. You can find all the information for this course on this page. Please check this page frequently for announcements and assignments.

MAT 341 Number Theory

Undergraduate course, Mathematics Department, Utica University, 2024

Welcome to the home page of Prof. Xiao Xiao’s Number Theory course at Utica University. You can find all the informtion and documents for this course on this page. Please check this page frequently for announcements and assignments.