- P Versus NP Problem
- P-'-group
- P-adic absolute value
- P-adic integer
- P-adic integers
- P-adic norm
- P-adic number
- P-element
- P-form
- P-group
- P-Series or P-series
- P-System or P-system
- P-Value or P-value
- Paasche's index
- Packing
- Pact
- Padovan sequence
- Padé approximant
- Padé approximation
- Painlevé equation
- Painlevé property
- Painlevé transcendents
- Pair
- Paired
- Paired t-test
- Pairing
- Pairing function
- Pairwise
- Pairwise disjoint
- Pairwise independence
- Paley's Theorem or Paley's theorem
- Paley-Wiener theorem
- Palindrome
- Palindrome number
- Palindromic number
- Palindromic prime
- Palprime
- Pancake sorting
- Pandiagonal magic cube
- Pandiagonal magic square
- Pandigital
- Pandigital number
- Panmagic square
- Pantograph
- Papal Cross or Papal cross
- Paper bag
- Paper Folding or Paper folding
- Pappus graph
- Pappus's centroid theorem
- Pappus's hexagon theorem
- Pappus's Theorem or Pappus's theorem
- Pappus-Guldinus theorem
- Parabiaugmented dodecahedron
- Parabiaugmented hexagonal prism
- Parabiaugmented truncated dodecahedron
- Parabidiminished rhombicosidodecahedron
- Parabigyrate rhombicosidodecahedron
- Parabola
- Parabolic coordinates
- Parabolic cylinder function
- Parabolic cylindrical coordinates
- Parabolic geometry
- Parabolic Partial Differential Equation or Parabolic partial differential equation
- Parabolic subalgebra
- Parabolic subgroup
- Paraboloid
- Paraboloidal coordinates
- Paracompact space
- Paracompact topological space
- Paracompactness criteria
- Paraconsistent logic
- Paradox
- Paragyrate diminished rhombicosidodecahedron
- Parallax
- Parallel
- Parallel Axiom or Parallel axiom
- Parallel Computing or Parallel computing
- Parallel curve
- Parallel curves
- Parallel Lines or Parallel lines
- Parallel planes
- Parallel postulate or Parallel Postulate
- Parallel programming
- Parallel random access machine
- Parallel translation
- Parallel transport
- Parallelepiped
- Parallelism
- Parallelism axiom
- Parallelizable
- Parallelizable manifold
- Parallelogram
- Parallelogram law
- Parallelopipedon
- Parameter
- Parameterization
- Parametric equation
- Parametric equations
- Parametric representation
- Parametric statistics
- Parametrization
- Parametrized Surface or Parametrized surface
- Parasitic number
- Parent node
- Parenthesis
- Pareto distribution
- Pareto dominant
- Paris-Harrington theorem or Paris-harrington theorem
- Parity
- Parmenides
- Parrondo's Paradox or Parrondo's paradox
- Parseval equality
- Parseval's relation
- Parseval's theorem
- Partial derivative or Partial Derivative
- Partial differential
- Partial Differential Equation or Partial differential equation
- Partial Evaluation or Partial evaluation
- Partial Fraction Decomposition or Partial fraction decomposition
- Partial fractions
- Partial function or Partial Function
- Partial geometry
- Partial Integration or Partial integration
- Partial isometry
- Partial mapping
- Partial order
- Partial recursive function
- Partial sum
- Partial summation
- Partially ordered set
- Partisan game
- Partition
- Partition function or Partition Function
- Partition of a set
- Partition of unity
- Partizan game
- Party problem
- Parzen window
- Pascal Distribution or Pascal distribution
- Pascal matrix
- Pascal theorem
- Pascal triangle
- Pascal's formula
- Pascal's rule
- Pascal's theorem
- Pascal's triangle or Pascal's Triangle
- Pascal's Wager or Pascal's wager
- Pasch axiom
- Pasch's axiom
- Pasch's theorem
- Patch
- Path
- Path (graph theory)
- Path component
- Path graph
- Path integral
- Path length
- Path Space or Path space
- Path-connected
- Path-connected space
- Pathological
- Pathological (mathematics)
- Pathwise-connected
- Patriarchal cross
- Pattern
- Pattern recognition
- Paul Ehrenfest
- Paul-André Meyer or Paul-andré meyer
- Pauli algebra
- Pauli Matrices or Pauli matrices
- Pauli Spin Matrices
- Paving
- Payoff matrix
- PDF or Pdf
- Peacock Tail
- Peano arithmetic or Peano Arithmetic
- Peano axioms or Peano Axioms
- Peano curve
- Peano space
- Peano theorem
- Peano's axioms
- Pearson distribution
- Pearson product-moment correlation coefficient
- Pearson's correlation
- Pebibyte
- Pedal
- Pedal curve
- Pedal line
- Pedal point
- Pedal triangle
- Peetre's inequality
- Peg
- Peg solitaire
- Peirce arrow
- Pelageya Polubarinova-Kochina
- Pell equation
- Pell number
- Pell Sequence or Pell sequence
- Pell's equation
- Pell-Lucas Number or Pell-Lucas number or Pell-lucas number
- Peloponnesian War or Peloponnesian war
- Pencil
- Penrose tiles
- Penrose tiling
- Penrose transform
- Penrose Triangle or Penrose triangle
- Penrose Tribar or Penrose tribar
- Pentabolo
- Pentachoron
- Pentacle
- Pentacontagon
- Pentacube
- Pentad
- Pentadecagon
- Pentadiagonal matrix
- Pentagon
- Pentagon tiling
- Pentagonal antiprism
- Pentagonal cupola
- Pentagonal Dipyramid or Pentagonal dipyramid
- Pentagonal gyrobicupola
- Pentagonal gyrocupolarotunda
- Pentagonal hexecontahedron
- Pentagonal icositetrahedron
- Pentagonal number
- Pentagonal number theorem
- Pentagonal orthobicupola
- Pentagonal orthobirotunda
- Pentagonal orthocupolarotunda
- Pentagonal Prism or Pentagonal prism
- Pentagonal pyramid
- Pentagonal pyramidal number
- Pentagonal rotunda
- Pentagonal trapezohedron
- Pentagram
- Pentagrammic antiprism
- Pentagrammic crossed antiprism
- Pentagrammic prism
- Pentahedron
- Pentakaidecagon
- Pentakis dodecahedron
- Pentalpha
- Pentangle
- Pentatope
- Pentatope number
- Pentiamond
- Pentomino
- Per cent
- Per mille
- Percent
- Percent sign
- Percentage
- Percentage error
- Percentage point
- Percentile
- Percentile rank
- Percolation theory
- Perfect box
- Perfect code
- Perfect cuboid
- Perfect field
- Perfect graph
- Perfect graph theorem
- Perfect group
- Perfect Information or Perfect information
- Perfect magic cube
- Perfect matching
- Perfect number
- Perfect power
- Perfect ruler
- Perfect set
- Perfect Square or Perfect square
- Perfect square dissection
- Perfect totient number
- Perfectly-normal space
- Perforation
- Performance analysis
- Periapsis
- Pericles
- Perigon
- Perimeter
- Period
- Period (mathematics)
- Period mapping
- Period matrix
- Period of a function
- Periodic continued fraction
- Periodic function
- Periodic functions
- Periodic group
- Periodic point
- Periodic solution
- Periodic zeta function
- Periodogram
- Periods
- Perkins's quilt
- Permanent
- Permutable prime
- Permutable subgroup
- Permutation
- Permutation group
- Permutation matrix
- Permutation symbol
- Permutation test
- Permutation tests
- Perpendicular
- Perpendicular bisector
- Perpendicular vector
- Perrin pseudoprime
- Perrin sequence
- Perron Integral or Perron integral
- Perron's formula
- Perron-Frobenius Operator or Perron-Frobenius operator
- Perron-Frobenius theorem
- Persian curve
- Persistence
- Perspective
- Perspective projection
- Persymmetric Matrix or Persymmetric matrix
- Perturbation theory
- Perverse sheaf
- Petabyte
- Peter Sarnak
- Peter-Weyl theorem
- Peters Projection or Peters projection
- Petersen graph or Petersen Graph
- Peterson inner product
- Petersson conjecture or Ramanujan-Petersson_conjecture
- Petersson inner product
- Petri net
- Petrov classification
- Pfaffian
- Pfaffian system
- Phase (waves)
- Phase plane
- Phase portrait
- Phase shift
- Phase Space or Phase space
- Phase Transition or Phase transition
- Phase velocity vector
- Phasor
- Philo line
- Philolaus
- Philon line
- Phragmén-Lindelöf principle
- Phragmén-Lindelöf theorem
- Phyllotaxis
- Physical vector
- Pi
- Pi approximations
- Pi Continued Fraction or Pi continued fraction
- Pi Digits or Pi digits
- Pi-system
- Picard group
- Picard number
- Picard scheme
- Picard theorem
- Picard variety
- Picard's existence theorem
- Picard's great theorem
- Picard's Little Theorem or Picard's little theorem
- Picard's theorem
- Pick theorem
- Pick's theorem
- Pictures
- PID or Pid
- Pie chart
- Piecewise
- Piecewise constant function
- Piecewise continuous
- Piecewise function
- Piecewise Linear Function or Piecewise linear function
- Piecewise smooth
- Pierpont prime or Pierpont Prime
- Pierre de Fermat or Pierre de fermat
- Pigeonhole principle or Pigeonhole Principle
- Pillai prime
- Pillai's conjecture
- Pillow
- Pincherle derivative
- Pinching theorem
- Pisano period
- Pisot
- Pisot number
- Pistol
- Pitchfork bifurcation
- Pivot point
- Pivoting
- PL/I
- Plain text
- Plaintext
- Planar graph
- Planar straight line graph
- Plancherel formula
- Plancherel measure
- Plancherel theorem
- Plancherel's theorem or Plancherel's Theorem
- Planck constant
- Plane
- Plane at infinity
- Plane curve
- Plane Geometry or Plane geometry
- Plane graph
- Plane partition
- Plane symmetry groups
- Plane-filling curve
- Plane-line intersection
- Plastic constant
- Plastic number
- Plat
- Plate carre
- Plateau (mathematics)
- Plateau problem
- Plateau's laws
- Plateau's problem
- Platonic solid or Platonic Solid
- Platonic solids
- Platykurtic
- Player
- Playfair's Axiom or Playfair's axiom
- Pliny
- Plot
- Plotinus
- Plotting position
- Plumbing
- Pluperfect number
- Pluriharmonic function
- Pluripolar set
- Plurisubharmonic function
- Plurisuperharmonic function
- Plus
- Plus or minus
- Plus sign
- Plus-construction
- Plutarch
- Plücker coordinates
- Plücker embedding
- Plücker formula
- Plücker formulas
- Pochhammer
- Pochhammer symbol
- Poggendorff Illusion or Poggendorff illusion
- Poincaré conjecture
- Poincare duality
- Poincare lemma
- Poincare-Bendixson theorem
- Poincarè recurrence theorem
- Poincaré conjecture or Poincaré Conjecture
- Poincaré disc model
- Poincaré disk
- Poincaré dodecahedral space
- Poincaré duality or Poincare duality
- Poincaré group
- Poincaré hyperbolic disk
- Poincaré lemma
- Poincaré line bundle
- Poincaré Map or Poincaré map
- Poincaré metric
- Poincaré model
- Poincaré recurrence theorem
- Poincaré section
- Poincaré sphere
- Poincaré theorem
- Poincaré transformation
- Poincaré's lemma
- Poincaré's Theorem or Poincaré's theorem
- Poincaré-Bendixson theory
- Poincaré-Birkhoff-Witt theorem
- Poincaré-Hopf index theorem
- Poincaré-Hopf theorem
- Poinsot solid
- Poinsot's spirals
- Point
- Point at infinity
- Point estimator
- Point finite
- Point finite collection
- Point groups
- Point lattice
- Point of inflection
- Point-free geometry
- Point-set topology
- Pointed set
- Pointed space
- Pointed topological space
- Pointwise
- Pointwise convergence
- Poiseuille flow
- Poisson algebra
- Poisson bracket or Poisson Bracket
- Poisson brackets
- Poisson distribution or Poisson Distribution
- Poisson equation
- Poisson formula
- Poisson integral
- Poisson kernel
- Poisson Lie group
- Poisson manifold
- Poisson process or Poisson Process
- Poisson ring
- Poisson summation formula
- Poisson's equation or Poisson's Equation
- Poisson-Boltzmann equation
- Poker
- Polar Angle or Polar angle
- Polar circle
- Polar coordinates or Polar Coordinates
- Polar curve
- Polar decomposition
- Polar Equation or Polar equation
- Polar plot
- Polar set
- Polar set (potential theory)
- Polar space
- Polar vector
- Polarity
- Polarization of an algebraic form
- Pole
- Polignac's conjecture
- Polish notation or Polish Notation
- Polish space
- Pollard
- Pollard's p-1 algorithm
- Pollard's rho algorithm
- Poly-harmonic function
- Polya
- Polyabolo
- Polychoron
- Polyconic projection
- Polycube
- Polycyclic group
- Polydisc
- Polydisk
- Polydivisible number
- Polydrafter
- Polyform
- Polygamma function
- Polygon
- Polygon area
- Polygon triangulation
- Polygonal number
- Polygram
- Polyhedron
- Polyhedron compound
- Polyhex
- Polyiamond
- Polylogarithm
- Polymatroid
- Polymorph
- Polynomial
- Polynomial curve
- Polynomial equation
- Polynomial factorization
- Polynomial function
- Polynomial height
- Polynomial hierarchy
- Polynomial interpolation
- Polynomial long division
- Polynomial map
- Polynomial matrix
- Polynomial remainder
- Polynomial remainder theorem
- Polynomial ring
- Polynomial roots
- Polynomial sequence
- Polynomial time
- Polynomially convex hull
- Polyomino
- Polyrectangle
- Polytan
- Polytope
- Pompeiu problem
- Pompey the Great
- Pompeïu's theorem
- Poncelet's porism
- Pong Hau K'i or Pong hau k'i
- Pons asinorum or Pons Asinorum
- Pontryagin class
- Pontryagin duality
- Pontryagin maximum principle
- Pontryagin number
- Ponzo's illusion
- Pop
- Population
- Population growth
- Population mean
- Porism
- Poset
- Poset dimension
- Position four-vector
- Position vector or Position Vector
- Positive
- Positive correlation
- Positive current
- Positive definite
- Positive definite form
- Positive definite function
- Positive definite matrix
- Positive element
- Positive functional
- Positive integer
- Positive linear functional
- Positive map
- Positive measure
- Positive number
- Positive operator
- Positive part
- Positive root
- Positive semidefinite
- Positive semidefinite matrix
- Positive-definite form
- Positive-definite function
- Positively expansive
- Post correspondence problem
- Post machine
- Postage stamp problem
- Posterior distribution
- Postfix notation
- Postulate
- Potential
- Potential field
- Potential function
- Potential theory
- Poulet number
- Power
- Power associative algebra
- Power center
- Power curve
- Power function
- Power Line or Power line
- Power mean
- Power object
- Power of point
- Power Point or Power point
- Power rule or Power Rule
- Power series
- Power set
- Power set axiom
- Power spectrum
- Power Sum or Power sum
- Power Tower or Power tower
- Power-associative algebra
- Powerful number
- Practical number
- Prandtl number
- Pratt certificate
- Pre-compact space
- Pre-Hilbert space
- Pre-image
- Pre-order
- Pre-sheaf
- Preadditive category
- Precedence
- Precession
- Precession of the equinoxes
- Precision
- Precompact set
- Preconditioner
- Predecessor
- Predicate
- Predicate Calculus or Predicate calculus
- Predicate variable
- Predictability
- Prefix
- Preimage
- Premise
- Prenex form
- Prenex normal form or Prenex Normal Form
- Preorder
- Presburger arithmetic or Presburger Arithmetic
- Present value or Present Value
- Presentation
- Presentation of a group
- Presheaf
- Pretzel knot
- Price's Theorem or Price's theorem
- Primality certificate
- Primality test
- Primality Testing or Primality testing
- Primary
- Primary decomposition
- Primary ideal
- Primary pseudoperfect number
- Prime
- Prime arithmetic progression
- Prime Circle or Prime circle
- Prime constant
- Prime constellation
- Prime Counting Function or Prime counting function
- Prime Cut or Prime cut
- Prime decomposition
- Prime divisor
- Prime element
- Prime factor
- Prime Factorization or Prime factorization
- Prime factorization algorithms
- Prime field
- Prime gap
- Prime gaps
- Prime ideal
- Prime ideal theorem
- Prime k-Tuple or Prime k-tuple
- Prime knot
- Prime model
- Prime number or Prime Number
- Prime number theorem or Prime Number Theorem
- Prime Pages or Prime pages
- Prime polynomial
- Prime power
- Prime quadruplet
- Prime radical
- Prime ring
- Prime signature
- Prime spectrum
- Prime spiral
- Prime subfield
- Prime triplet
- Prime twins
- Prime zeta function
- Prime-counting function
- Primefree sequence
- Primequad
- Primes
- Primitive
- Primitive element
- Primitive element theorem
- Primitive function
- Primitive group
- Primitive ideal
- Primitive permutation group
- Primitive polynomial
- Primitive pseudoperfect number
- Primitive recursion
- Primitive recursive
- Primitive recursive function
- Primitive ring
- Primitive root
- Primitive root of unity
- Primitive semiperfect number
- Primorial
- Primorial prime or Primorial Prime
- Principal
- Principal branch
- Principal bundle
- Principal character
- Principal Component Analysis or Principal component analysis
- Principal components analysis
- Principal curvature
- Principal curvatures
- Principal diagonal
- Principal direction
- Principal homogeneous space
- Principal ideal
- Principal ideal domain
- Principal ideal ring or Principal Ideal Ring
- Principal ideal theorem
- Principal part
- Principal ring
- Principal series
- Principal square root
- Principal value
- Principal vertex
- Principle
- Principle of Computational Equivalence or Principle of computational equivalence
- Principle of inclusion-exclusion
- Principle of Insufficient Reason or Principle of insufficient reason
- Principle of mathematical induction
- Principle of stationary phase
- Principle of the argument
- Principle of uniform boundedness
- Pringle
- Prior distribution
- Priority Queue or Priority queue
- Prism
- Prismatoid
- Prismoid
- Prisoner's Dilemma or Prisoner's dilemma
- Prizes
- Pro-p group
- Probabilistic automaton
- Probabilistic method
- Probabilistic metric space
- Probabilistic Turing machine or Probabilistic Turing Machine
- Probability
- Probability Axioms or Probability axioms
- Probability density function or Probability Density Function
- Probability distribution
- Probability distribution function
- Probability function
- Probability mass function
- Probability measure
- Probability space
- Probability theory
- Probable prime
- Problem
- Problems in low-dimensional topology
- Procedure
- Product
- Product (category theory)
- Product category
- Product category theory
- Product formula
- Product integral
- Product measure
- Product Metric or Product metric
- Product rule
- Product set
- Product space
- Product topology
- Productive set
- Profinite completion
- Profinite group
- Program
- Programming
- Programming language
- Progression
- Progressive function
- Projection
- Projection matrix
- Projection operator
- Projective algebraic variety
- Projective connection
- Projective cover
- Projective curve
- Projective differential geometry
- Projective dimension
- Projective general linear group
- Projective geometry or Projective Geometry
- Projective group
- Projective limit
- Projective line
- Projective module
- Projective object
- Projective plane
- Projective representation
- Projective resolution
- Projective set
- Projective space
- Projective special linear group
- Projective special orthogonal group
- Projective special unitary group
- Projective symplectic group
- Projective topology
- Projective transformation
- Projective variety
- Projectively extended real numbers
- Projector
- Prolate cycloid
- Prolate spheroid
- Prolate spheroidal coordinates
- Promise problem
- Pronic number
- Pronormal subgroup
- Proof
- Proof by contradiction
- Proof theory
- Prop
- Propeller
- Proper
- Proper class
- Proper cone
- Proper divisor
- Proper factor
- Proper fraction
- Proper map
- Proper morphism
- Proper subgroup
- Proper subset
- Proper superset
- Proper vector
- Properly discontinuous action
- Propertius
- Proportional
- Proportionality (mathematics)
- Proposition
- Propositional Calculus or Propositional calculus
- Propositional form
- Propositional formula
- Propositional function
- Propositional logic
- Propositional variable
- Prosthaphaeresis formulas
- Protagoras
- Proth number
- Proth prime
- Proth's theorem
- Protractor
- Prouhet-Thue-Morse constant
- Prouhet-Thue-Morse sequence
- Proximity
- Proximity space
- Prüfer code
- Prüfer domain
- Prüfer ring
- Pseudo-arc
- Pseudo-differential operator
- Pseudo-Euclidean space or Pseudo-euclidean space
- Pseudo-group
- Pseudo-manifold
- Pseudo-metric
- Pseudo-metric space
- Pseudo-prime
- Pseudo-random numbers
- Pseudo-Riemannian manifold
- Pseudo-Riemannian metric
- Pseudo-Riemannian space
- Pseudo-scalar
- Pseudo-sphere
- Pseudo-tensor
- Pseudo-vector
- Pseudocircle
- Pseudocompact space
- Pseudoconvex
- Pseudodifferential operator
- Pseudograph
- Pseudogroup
- Pseudoinverse
- Pseudometric
- Pseudometric space
- Pseudoperfect number
- Pseudoprime
- Pseudorandom
- Pseudorandom generator
- Pseudorandom number
- Pseudorandom numbers
- Pseudorhombicuboctahedron
- Pseudoscalar
- Pseudosphere
- Pseudotensor
- Pseudovector
- Psi function
- Ptolemeus theorem
- Ptolemy inequality
- Ptolemy's theorem or Ptolemy's Theorem
- Public key cryptography
- Public-key cryptography
- Puiseux series
- Puiseux's theorem
- Pullback
- Pullback bundle
- Pullback map
- Pulse function
- Puncture
- Punctured plane
- Punctured set
- Pure simplicial complex
- Pure subgroup
- Pure submodule
- Purely inseparable
- Purely inseparable extension
- Push
- Pushdown automaton
- Pushout map
- Putnam Competition or Putnam competition
- Putnam mathematical competition
- Puzzle
- Pyramid
- Pyramidal number
- Pyritohedron
- Pythagoras prime
- Pythagoras theorem
- Pythagoras tree
- Pythagoras's constant
- Pythagoras's theorem
- Pythagorean means
- Pythagorean prime
- Pythagorean Quadruple or Pythagorean quadruple
- Pythagorean theorem or Pythagorean Theorem
- Pythagorean triad
- Pythagorean triangle
- Pythagorean Triple or Pythagorean triple
- Pythagorean triplet
- Péclet number
- Pépin's test
- Pólya Conjecture or Pólya conjecture
- Pólya enumeration theorem
- Pólya theorem
- Pólya-Burnside Lemma or Pólya-Burnside lemma or Pólya-burnside lemma
- Pólya-Vinogradov inequality
