Group structure and the axiom of choice
Closed subgroup theorem
Derivative of the exponential map
Lie algebra extension
Representation theory of the Lorentz group finite-dimensional part.
Classical group
Wigner's theorem
Suggested improvements: /Representation theory of the Lorentz group
Math part from the above: /Finite dimensional representations
Physics part from the above: /Consequences of Lorentz invariance
Part of above specific to bispinors /Bispinor
Part of above specific to the Dirac algebra (Clifford algebra of spacetime i 4 dimensions) /Dirac algebra
Bell's theorem additions: /Bell's theorem
Representation theory of some important groups: /Representation theory of some important groups