| Abbreviation | Definition |
|---|---|
| PID | Proportional Integral Derivative |
| PIE | Principle Of Inclusion And Exclusion |
| PIF | Plot Implausibility Field |
| PIG | Physical Improbability Generator |
| PILP | Parametric Integer Linear Program |
| PIM | Parallel Iterative Method |
| PIM | Parallel Iterative Methods |
| PIMB | Publications de l'Institut Mathématique Beograd |
| PIR | Periodic Interest Rate |
| PIT | Positive Information Topology |
| PIV | Positive Infinitely Variable |
| PK | Proof of Knowledge |
| PKR | Prediction-Knowledge Relationship |
| PL | Piecewise Linear |
| PL | Point and Line |
| PL | Power Law |
| PL | Predicate Logic |
| PL | Produce a Line |
| PL | Proportional Logic |
| PL | Propositional Logic |