spectral theory of Laplacian on $\mathbb R^n$
67344
What is spectrum for Laplacian in $\mathbb{R}^n$?
126337
Eigenvalues in orthogonal matrices
16443
Laplacian in polar coordinates
2129
Showing that the derivative operator is not bounded on $L^2 (\mathbb{R})$
116513
Distributional Laplacian of logarithm and the Dirac delta distribution
135420
Determining eigenvalues, eigenvectors of $A\in \mathbb{R}^{n\times n}(n\geq 2)$.
34886
Transvection matrices generate $ \operatorname{SL}_n(\mathbb{R}) $
72046
Prove all eigenvalues of $A^*A$ are non-negative
49158
Multiplicity of eigenvalues
119352
compact and self adjoint square root of an operator
92746
$\Delta \mathbf n = -2 \mathbf n$ on the Euclidean sphere
84535
The spectral radius of normal operator
78263
Prove $GL_n(\Bbb{R})/SL_n(\Bbb{R}) \cong \Bbb{R}^\times$
144104
Show that a positive operator on a complex Hilbert space is self-adjoint
136635
Proving that the Fourier Basis is complete for C(R/$2*\pi$ , C) with $L^2$ norm
89649
Linear Algebra munkres analysis on manifolds question.
7457
Prove that $J^+AJ$ has positive eigenvalues