A Combinatorial Identity on Galton-Watson Process

来源 :第六届图论与组合算法国际研讨会(The 6th International Symposium on Graph The | 被引量 : 0次 | 上传用户:liongliong453
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  For any integer m>0 and any real c,let f(m,c)=∑∞k=0(km+1)k-1cke-(km+1)c/k!.The identity f(m,/c=m)m=f(1,c)arises in the random graph theory.Here we present two elementary proofs of this identity:a pure combinatorial proof and a power-serial proof.This is a joint work with Linyuan Lu.
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