- p-vector
- P versus NP problem
- PV-number
- Pyatetskii-Shapiro, I.I.(Пятецкий-Шапиро, И.И.)
- pyramid
- pyramidal frustum
- pyramidal number
- pyramidal surface
- pyritohedron
- Pythagoras
- Pythagoras constant
- Pythagoras theorem
- Pythagoras tree
- Pythagorean
- Pythagorean closure
- Pythagorean equation
- Pythagorean extension
- Pythagorean field
- Pythagorean fraction
- Pythagorean means
- Pythagorean numbers
- Pythagorean ordered field
- Pythagorean proposition
- Pythagorean quadruple
- Pythagorean square puzzle