Differential generators of 4D rotations and $so(4)\sim so(3)\times so(3)$
96770
Explicit isomorphism between the four dimensional orthogonal Lie algebra and the direct sum of special linear Lie algebras of dimension 3.
139868
Linear transformations, $R^5,R^4$
58807
Solving the Lie algebra of generators: path from algebra to matrix representation
75988
Explicit isomorphism $S_4/V_4$ and $S_3$
155492
Exercise on local and global symmetry for a given Lagrangian density
108325
What's the relationship between $SL(2,\mathbb{C})$, $SU(2)\times SU(2)$ and $SO(1,3)$?
83230
A useful illustration for differential geometry
112216
Geometric description of canonical commutation relation
84677
An Explicit Isomorphism Between the Three Dimensional Orthogonal Lie Algebra and the Special Linear Lie Algebra of Dimension $3$
19497
Analogue of spherical coordinates in $n$-dimensions
126885
canonical representation of three skew lines in $\mathbb{P}^3$
99384
What are the Complex (Non-Real) Eigenvectors of $3\times 3$ Rotation Matrices?
155195
Contraction of Kronecker delta = 4
36826
Products of Differential Operators
102418
Rotations preserve cross products?
22279
Local and Global Symmetries
33278
$\delta$ differential notation