van der Pol Equation
An Ordinary Differential Equation which can be derived from the Rayleigh Differential Equation bydifferentiating and setting 
. It is an equation describing self-sustaining oscillations in which energy is fed intosmall oscillations and removed from large oscillations. This equation arises in the study of circuits containing vacuumtubes and is given by
See also Rayleigh Differential Equation
References
Kreyszig, E. Advanced Engineering Mathematics, 6th ed. New York: Wiley, pp. 165-166, 1988.
- Picone's Theorem
- Piecewise Circular Curve
- Pie Cutting
- Pigeonhole Principle
- Pi Heptomino
- Pillai's Conjecture
- Pilot Vector
- Pinching Theorem
- Pinch Point
- Pine Cone Number
- Piriform
- Pisot-Vijayaraghavan Constants
- Pistol
- Pitchfork Bifurcation
- Pivoting
- Pivot Theorem
- Pizza Theorem
- Place (Digit)
- Place (Field)
- Place (Game)
- Planar Bubble Problem
- Planar Distance
- Planar Graph
- Planar Point
- Planar Space