高斯短语的同伦不变量
Homotopy invariants of Gauss phrases
摘要:
等价关系可以使用组合移动在高斯短语上定义。本文考虑高斯短语上两个密切相关的等价关系:同伦和开同伦。特别是,在每种情况下,我们定义一个新的不变量,并确定它可以达到的值。
英文摘要:
Equivalence relations can be defined on Gauss phrases using combinatorial moves. In this paper we consider two closely related equivalence relations on Gauss phrases, homotopy and open homotopy. In particular, in each case, we define a new invariant and determine the values that it can attain.
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