Ballots and plane trees
โ Scribed by John Riordan
- Book ID
- 107883973
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 149 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0095-8956
No coin nor oath required. For personal study only.
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## Abstract Harary and Robinson showed that the number __a__~__n__~ of achiral planted plane trees with __n__ points coincides with the number __p__~__n__~ of achiral plane trees with __n__ points, for __n__ โฉพ 2. They posed the problem of finding a natural structural correspondence which explains t
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