A transcendental invariant of pseudo‐Anosov maps
A transcendental invariant of pseudo‐Anosov maps
复制标题
伪阿诺索夫映射的超越不变量
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发表时间:
2012
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通讯作者:
Hongbin Sun
中科院分区:
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作者:
Hongbin Sun
For each pseudo‐Anosov map ϕ:S→S , we associate it with a Q ‐vector space lying in R , and denote it by A(S,ϕ) . The invariant A(S,ϕ) is defined by an interaction between the Thurston norm and the dilatation of pseudo‐Anosov maps. We develop a few nice properties of A(S,ϕ) and give a few examples to show that A(S,ϕ) is a nontrivial invariant. These nontrivial examples give an answer to a question asked by McMullen, and show that the minimal point of the restriction of the dilatation function on the fibered face need not be a rational point.