A bijection from ordered trees to binary trees that sends the pruning order to the Strahler number (Q913810)
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scientific article; zbMATH DE number 4148112
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A bijection from ordered trees to binary trees that sends the pruning order to the Strahler number |
scientific article; zbMATH DE number 4148112 |
Statements
A bijection from ordered trees to binary trees that sends the pruning order to the Strahler number (English)
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1990
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In this beautiful note a bijective proof for the following fact is given: The number of ordered trees with n vertices and pruning order k equals the number of binary trees with n leaves and Strahler number k.
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number of ordered trees
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0.8794905
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0.87217927
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0.83586836
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0.8324125
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0.8317843
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0.83165526
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0.82972777
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0.8284435
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0.8283948
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