This is a list of mathematical topics in relativity, by Wikipedia page.

Special relativity

• Foundational issues
  • principle of relativity
  • speed of light
  • faster-than-light
• biquaternion
• conjugate diameters
• four-vector
  • four-acceleration
  • four-force
  • four-gradient
  • four-momentum
  • four-velocity
• hyperbolic orthogonality
• hyperboloid model
• light-like
• Lorentz covariance
• Lorentz group
• Lorentz transformation
• Lorentz–FitzGerald contraction hypothesis
• Minkowski diagram
• Minkowski space
• Poincaré group
• proper length
• proper time
• rapidity
• relativistic wave equations
• relativistic mass
• split-complex number
• unit hyperbola
• world line

General relativity

• black holes
  • no-hair theorem
  • Hawking radiation
  • Hawking temperature
  • Black hole entropy
  • charged black hole
  • rotating black hole
  • micro black hole
  • Schwarzschild black hole
  • Schwarzschild metric
  • Schwarzschild radius
  • Reissner–Nordström black hole
  • Immirzi parameter
• closed timelike curve
• cosmic censorship hypothesis
• chronology protection conjecture
• Einstein–Cartan theory
• Einstein's field equation
• geodesic
• gravitational redshift
• Penrose–Hawking singularity theorems
• Pseudo-Riemannian manifold
• stress–energy tensor
• worm hole

Cosmology

• anti-de Sitter space
• Ashtekar variables
• Batalin–Vilkovisky formalism
• Big Bang
• Cauchy horizon
• cosmic inflation
• cosmic microwave background
• cosmic variance
• cosmological constant
• dark energy
• dark matter
• de Sitter space
• Friedmann–Lemaître–Robertson–Walker metric
• horizon problem
• large-scale structure of the cosmos
• Randall–Sundrum model
• warped geometry
• Weyl curvature hypothesis