Free Higher Groups in Homotopy Type Theory
Free Higher Groups in Homotopy Type Theory
复制标题
同伦型理论中的自由高级群
DOI:
10.1145/3209108.3209183
复制
发表时间:
2018
期刊:
影响因子:
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通讯作者:
Thorsten Altenkirch
中科院分区:
文献类型:
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作者:
Nicolai Kraus;Thorsten Altenkirch
Given a type A in homotopy type theory (HoTT), we can define the free ∞-group on A as the loop space of the suspension of A + 1. Equivalently, this free higher group can be defined as a higher inductive type F(A) with constructors unit: F(A), cons: A~F(A)~F(A), and conditions saying that every cons(a) is an auto-equivalence on F(A). Assuming that A is a set (i.e. satisfies the principle of unique identity proofs), we are interested in the question whether F(A) is a set as well, which is very much related to an open problem in the HoTT book [22, Ex. 8.2]. We show an approximation to the question, namely that the fundamental groups of F(A) are trivial, i.e. that ||F(A)||1 is a set.
DOI:
10.48550/arxiv.1610.09254
发表时间:
2016
期刊:
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影响因子:
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作者:
Altenkirch T
通讯作者:
Altenkirch T
DOI:
10.1145/2837614.2837638
发表时间:
2016-01
期刊:
Proceedings of the 43rd Annual ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages
影响因子:
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作者:
Thorsten Altenkirch;A. Kaposi
通讯作者:
Thorsten Altenkirch;A. Kaposi
DOI:
10.48550/arxiv.1604.03799
发表时间:
2016
期刊:
--
影响因子:
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作者:
Altenkirch T
通讯作者:
Altenkirch T