Toby Stephen Gee (born 2 January 1980) is a British mathematician working in number theory and arithmetic aspects of the Langlands Program.
[4] Gee read mathematics at Trinity College, Cambridge, where he was Senior Wrangler in 2000.
After completing his PhD with Kevin Buzzard at Imperial College in 2004, he was a Benjamin Peirce Assistant Professor at Harvard University until 2010.
[5] With Mark Kisin, he proved the Breuil–Mézard conjecture for potentially Barsotti–Tate representations,[6] and with Thomas Barnet-Lamb and David Geraghty, he proved the Sato–Tate conjecture for Hilbert modular forms.
[7] One of his most influential ideas has been the introduction of a general 'philosophy of weights', which has clarified some aspects of the emerging mod p Langlands philosophy.