# User:Daviddaved/Notation

## NotationEdit

$\mathbb{N} \mbox{ is the set of integers}$
$\mathbb{R} \mbox{ is the set of real numbers}$
$\mathbb{R}^N \mbox{ is the N-dimensional Euclidean space}$
$\mathbb{C} \mbox{ is the set of complex numbers}$
$a,b,\ldots \mbox{ are real and complex numbers}$
$\mathbb{C}^+=\{z \in \mathbb{C}, \Re(z) \ge 0\} \mbox{ is the complex right half-plane}$
$\mathbb{D}=\{z \in \mathbb{C}, |z| \le 1\} \mbox{ is the closed unit disc}$
$\omega \mbox{ is root of unity}$
$M \mbox{ is surface}$
$\alpha, \beta, \ldots \mbox{ are analytic functions}$
$\nabla \mbox{ is gradient}$
$\Delta \mbox{ is Laplace operator}$
$\Lambda \mbox{ is Dirichlet-to-Neumann operator}$
$k, l, m \mbox{ are integers}$
$P, Q \mbox{ are ordered subsets of integers}$
$A, B, \ldots \mbox{ are matrices}$
$\lambda \mbox{ is eigenvalue}$
$\rho \mbox{ is characteristic polynomial}$
$P \mbox{ is permutation matrix}$
$F \mbox{ is Fourier transform}$
$H^k(\Omega) \mbox{ is a weighted space}$
$\Gamma/\Gamma^* \mbox{ is graph and its dual}$
$V \mbox{ is the set of vertices}$
$E \mbox{ is the set of edges}$
$w \mbox{ is weight function}$
$G/G^* \mbox{ is network and its dual}$
$M(G) \mbox{ is the medial graph}$
$\gamma \mbox{ is conductivity}$
$u, v \mbox{ are harmonic functions}$
$q \mbox{ is potential}$