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A Julia set fractal obtained by iterating the function z_(n+1)=c(z_n-sgn(R[z_n])), where sgn(x) is the sign function and R[z] is the real part of z. The plot above sets ...

The fractal illustrated above.

A convex figure constructed by iteratively halving the base of an equilateral triangle and then sliding adjacent triangles so that they slightly overlap. Combining several ...

A theorem which plays a fundamental role in computer science because it is one of the main tools for showing that certain orderings on trees are well-founded. These orderings ...

A tree is planted at each lattice point in a circular orchard which has center at the origin and radius r. If the radius of trees exceeds 1/r units, one is unable to see out ...

A limb of a tree at a vertex v is the union of one or more branches at v in the tree. v is then called the base of the limb.

The vertex height of a vertex v in a rooted tree is the number of edges on the longest downward path between v and a tree leaf. The height of the root vertex of a rooted tree ...

A tree spread in which each node has a finite number of children.

A fork of a tree T is a node of T which is the endpoint of two or more branches.

A tree G^' whose graph vertices and graph edges form subsets of the graph vertices and graph edges of a given tree G.