论文标题
关于$ \ Mathbb F_2 \ Times \ Mathbb F_2 $的SOFIC近似值
On sofic approximations of $\mathbb F_2\times\mathbb F_2$
论文作者
论文摘要
我们构建了$ \ Mathbb F_2 \ times \ Mathbb F_2 $的SOFIC近似，这本质上不是同型同构的SOFIC近似值的“分支封面”。这回答了L. Bowen的问题。
We construct a sofic approximation of $\mathbb F_2\times\mathbb F_2$ that is not essentially a "branched cover" of a sofic approximation by homomorphisms. This answers a question of L. Bowen.
