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The Nauru graph is the name given by Eppstein (2007) to the generalized Petersen graph GP(12,5) on 24 nodes and 36 edges which is also cubic symmetric graph F_(024)A, the ...

The conic sections are the nondegenerate curves generated by the intersections of a plane with one or two nappes of a cone. For a plane perpendicular to the axis of the cone, ...

A polyomino is a generalization of the domino to a collection of n squares of equal size arranged with coincident sides. Polyominos were originally called "super-dominoes" by ...

Two lines that lie on top of one another are called coincident lines.

An equation of the form y=ax^3+bx^2+cx+d where only one root is real.

The order n>=2 L-polyomino consists of a vertical line of n squares with a single additional square attached at the bottom.

A parallelogram in which angles are oblique and adjacent sides are of unequal length.

The straight polyomino of order n is the n-polyomino in which all squares are placed along a line.

A term meaning "spinning top" in Greek which was coined by J. H. Conway by e-mail in the Polyhedron Discussion List as a term for kite-shaped quadrilaterals. Formally, a ...

The order n T-polyomino consists of a vertical line of n-3 squares capped by a horizontal line of three squares centered on the line.