Formulas
- Piecewise linear function
- Pin group
- Turing's method
- Turán's brick factory problem
- Tutte–Grothendieck invariant
- Pi function
- Ricker wavelet
- Pincherle derivative
- Riemann's differential equation
- Riemann Xi function
- Pitchfork bifurcation
- Riemann series theorem
- Planar ternary ring
- Plane partition
- Riemann–Hilbert problem