Formulas
- Inexact differential
- Infimum and supremum
- Infinite-dimensional Lebesgue measure
- Infinite-dimensional holomorphy
- Infinite-valued logic
- Infinite expression
- Infinite product
- Infinitesimal generator (stochastic processes)
- Infinitesimal transformation
- Infinity Laplacian
- Information source (mathematics)
- Infrastructure (number theory)
- Initial algebra
- Initial condition
- Initial topology