On the structure of free baxter algebras
On the structure of free baxter algebras
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DOI:
10.1016/0001-8708(72)90018-7
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发表时间:
1972-10
影响因子:
1.7
通讯作者:
P. Cartier
中科院分区:
文献类型:
--
作者:
P. Cartier
A Baxter algebra is a commutative algebra A together with a linear operator P such that P (ab)+ P (a) P (b)= P (aP (b))+ P (bP (a)) holds for any pair a, b in A. We construct in an explicit way the free Baxter algebra B (X) on a set X. A suitable completion B̂ (X) of B (X) is the algebra of formal power series in the indeterminates D n (χ) for n⩾ 0 and χ in X, where D (a)=−∑∞ j= 1 P j (a), the series converging in B̂ (X). Incidentally a new set of identities of combinatorial interest is derived.