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The Dehn invariant is a constant defined using the angles and edge lengths of a three-dimensional polyhedron. It is significant because it remains constant under polyhedron ...

An arbitrary rotation may be described by only three parameters.

For c<1, x^c<1+c(x-1). For c>1, x^c>1+c(x-1).

The canonical generator of the nonvanishing homology group on a topological manifold.

A connection between two or more vertices of a hypergraph. A hyperedge connecting just two vertices is simply a usual graph edge.

A divisor which is not a proper divisor.

An archaic term for calculus.

A birotunda in which the bases are in the same orientation.

A statistical test in which assumptions are made about the underlying distribution of observed data.

A sum over all cluster perimeters.