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A convergence test also called "de Morgan's and Bertrand's test." If the ratio of terms of a series {a_n}_(n=1)^infty can be written in the form ...

The free part of the homology group with a domain of coefficients in the group of integers (if this homology group is finitely generated).

If a and b are integers not both equal to 0, then there exist integers u and v such that GCD(a,b)=au+bv, where GCD(a,b) is the greatest common divisor of a and b.

A maximal subgraph of an undirected graph such that any two edges in the subgraph lie on a common simple cycle.

Johnson solid J_(50).

The study of the nature and properties of bifurcations.

A convex planar domain in which the minimal generalized diameter is >1 always contains a circle of radius 1/3.

A generalization of Schröter's formula.

The domain of Booleans, sometimes denoted B, consisting of the elements True and False, implemented in the Wolfram Language as Booleans. In the Wolfram Language, a quantity ...

A relation between compact boundaryless manifolds (also called closed manifolds). Two closed manifolds are bordant iff their disjoint union is the boundary of a compact ...