Universal Music Group | Warner Music Group | Coxeter group | The Big Bang Theory | Volkswagen Group | Group of 77 | RTL Group | girl group | BT Group | ABB Group | Group One | Virgin Group | Thales Group | ING Group | group | Rio Tinto Group | Bloomsbury Group | Penguin Group | Carlsberg Group | Borders Group | Arup Group Limited | Theory of a Deadman | Benetton Group | Stagecoach Group | music theory | LMFAO (group) | Anschutz Entertainment Group | Tata Group | Rootes Group | Westfield Group |
Larsen is known for his research in arithmetic algebraic geometry, combinatorial group theory, combinatorics, and number theory.