Pham Tiep graduated from Chu Văn An High School, and received a silver medal at the IMO in London in 1979.
[2] He gave an invited talk at the International Congress of Mathematicians in Rio de Janeiro in 2018.
Pham Tiep was the fifth Vietnamese mathematician invited to speak at the International Congress of Mathematicians, following Frédéric Pham (1970), Duong Hong Phong (1994), Ngô Bảo Châu (2006,2010) and Van H. Vu (2014).
In a September 2024 paper, Tiep, along with Gunter Malle, Gabriel Navarro and Amanda Schaeffer Fry, proved[3] Brauer's height zero conjecture on the modular representation theory of Brauer blocks and their defect groups.
Also in 2024,[4] Tiep, along with Michael Larsen and others, derived uniform character bounds for various finite classical groups, leading to substantial progress on Thompson's conjecture[5] that each finite non-abelian simple group