Formulas
- Taubes's Gromov invariant
- Tautological bundle
- Tautological one-form
- Taxicab number
- Teichmüller space
- Tensor (intrinsic definition)
- Tensor product of Hilbert spaces
- Tensor product of algebras
- Tensor product of fields
- Ternary operation
- Theta representation
- Thick set
- Thompson groups
- Tightness of measures
- Tits alternative