A decomposition associated with a self-adjoint isometry
121802
Prove that every self-adjoint unitary linear operator can be expressed in the form $U\alpha = \beta - \gamma$
16692
a representation condition of Hilbert space
109643
Prove that every isometry on $\mathbb{R}^2$ is bijective
153903
Symmetry condition for continuous coordinate transformations
54628
Properties of non-zero symmetric bilinear form
37953
Primary Decomposition of $\mathbb{R^n}$ under T
56206
Symmetry of the $3\times 3$ Cauchy Stress Tensor
155123
Selfadjoint Operator: Basic Criterion
46435
2-norm of the orthogonal projection
69474
Orthogonal projections with $\sum P_i =I$, proving that $i\ne j \Rightarrow  P_{j}P_{i}=0$
139087
polar decomposition of a square A when A is not full rank/invertible
121495
Decompose vector fields on product manifolds
34712
Decomposable elements of $\Lambda^k(V)$
50731
Isometries of the sphere $\mathbb{S}^{n}$
29304
Surface integral of a scalar over a unit cube.
48524
Existence proof of the tensor product using the Adjoint functor theorem.
19497
Analogue of spherical coordinates in $n$-dimensions