- Petrovskiǐ condition
- Petrovskiǐ hyperbolicity
- Petrovskiǐ, I.G.(Петровский, И.Г.)
- Petrovskiǐ theorem
- Pettis, B.J.
- Pettis integrability
- Pettis integrable function
- Pettis integral
- Pettis measurability theorem
- Pettit, H.P.
- Petty, W.
- Petvyashvili, V.I.(Петвяшвили, В.И.)
- Petzval, J.
- Peurbach, G.
- p-expansion
- p-extension
- p-factor
- Pfaff differential form
- Pfaff equation
- Pfaff form
- Pfaffian (= pfaffian)
- Pfaff, J.F.
- Pfaff polynomial
- Pfaff problem
- Pfaff structure