| Abbreviation | Definition |
|---|---|
| IJMS | International Journal of Mathematics and Statistics |
| IK | Inverse Kinematic |
| IKO | Integral K Operator |
| ILQ | Inverse Linear Quadratic |
| ILS | Indirect Least Squares |
| ILST | Iterative Least Square Technique |
| ILT | Inverse LaPlace Transform |
| IM | Intermediate Modulus |
| IMA | Institute of Mathematics and |
| IMBM | Iterated Maximum Branch Minimization |
| IMCRT | Inverse Monte Carlo Ray-Tracing method |
| IME | Insurance Mathematics and Economics |
| IMEC | International Mathematics Exam Center |
| IMF | intrinsic mode function |
| IMHOTEP | Instructional Mathematics Helping Our Teens Excel Program |
| IMI | Inhomogeneous Markov Interval |
| IMI | Interdisciplinary Mathematics Institute |
| IMM | Interacting Multiple Model |
| IMMC | Iowa Mathematics Modeling Competition |
| IMMERSE | Intensive Mathematics a Mentoring Education and Research Summer Experience |