- turnover rate
- Tuscan square
- Tutte graph
- Tutte-Grothendieck invariant
- Tutte polynomial
- Tutte's conjecture
- TV band
- TVD schemes
- TVD格式
- TV system
- TV system conversion
- twelve point sphere of the first form of an orthocentric tetrahedron
- twelve point sphere of the second form of an orthocentric tetrahedron
- twilight
- twin primes
- twin primes
- twin primes
- twin primes conjecture
- twisted adjoint representation
- twisted affine Lie algebra
- twisted function
- twisted group
- twisted group ring
- twisted product
- twisted regular element