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Let a patch be given by the map x:U->R^n, where U is an open subset of R^2, or more generally by x:A->R^n, where A is any subset of R^2. Then x(U) (or more generally, x(A)) ...

Let Y^X be the set of continuous mappings f:X->Y. Then the topological space for Y^X supplied with a compact-open topology is called a mapping space.

The eigenvalues of a matrix A are called its spectrum, and are denoted lambda(A). If lambda(A)={lambda_1,...,lambda_n}, then the determinant of A is given by ...

The natural norm induced by the L-infty-norm is called the maximum absolute row sum norm and is defined by ||A||_infty=max_(i)sum_(j=1)^n|a_(ij)| for a matrix A. This matrix ...

The maximum flow between vertices v_i and v_j in a graph G is exactly the weight of the smallest set of edges to disconnect G with v_i and v_j in different components (Ford ...

A set of points capable of being enclosed in intervals whose total length is arbitrarily small.

The dual of the rhombidodecadodecahedron U_(38) and Wenninger dual W_(76).

The 30-faced dual of the truncated dodecadodecahedron and Wenninger dual W_(98).

The dual of the snub icosidodecadodecahedron U_(44) and Wenninger dual W_(112).

The dual of the icosidodecadodecahedron and Wenninger dual W_(83).