< User:Daviddaved


\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}