Labeled binary planar trees and quasi-Lie algebras
Labeled binary planar trees and quasi-Lie algebras
复制标题
带标签的二元平面树和拟李代数
DOI:
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发表时间:
2005
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影响因子:
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通讯作者:
J. Levine
中科院分区:
文献类型:
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作者:
J. Levine
We study the natural map η between a group of binary planar trees whose leaves are labeled by elements of a free abelian group H and a certain group D(H) derived from the free Lie algebra over H. Both of these groups arise in several different topological contexts. η is known to be an isomorphism over Q, but not over Z. We determine its cokernel and attack the conjecture that it is injective.