External Path Length -- from Wolfram MathWorld

The sum over all external (square) nodes of the lengths of the paths from the root of an extended binary tree to each node. For example, in the tree above, the external path length is 25 (Knuth 1997, pp. 399-400). The internal and external path lengths are related by E=I+2n, where n is the number of internal nodes.

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Generalized Petersen Graph -- from Wolfram MathWorld

Huffman Coding -- from Wolfram MathWorld

External Path Length -- from Wolfram MathWorld

Non-Euclidean geometry, Definition & Types

Graph Path -- from Wolfram MathWorld

Mathematics, Free Full-Text

ChatGPT Gets Its “Wolfram Superpowers”!—Stephen Wolfram Writings

Path Space -- from Wolfram MathWorld

Parallel -- from Wolfram MathWorld

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