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arXiv 2401.09751math.CT
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范畴中方程的图示表示

The diagrammatic presentation of equations in categories

Kevin Arlin, James Fairbanks, Tim Hosgood, Evan Patterson

AI总结:

本文定义了精确表示“同解”的范畴图等价,并证明图范畴沿该等价的局部化与切片范畴沿初始函子的局部化同构,且推广至局部可展示 2-范畴。

摘要:

范畴图 $D\colon\mathsf{J}\to\mathsf{X}$ 相对于离散余纤维 $π\colon\mathsf{E}\to\mathsf{X}$ 的提升,可以解释为对方程组解的表示。基于这一解释,人们自然会问:是否存在一种图等价概念 $D\simeq D'$,能够精确刻画两个图“具有相同解”这一思想。我们给出了这样的定义,随后证明 $\mathsf{X}$ 中图范畴沿此类等价的局部化,如何同构于切片范畴 $\mathsf{Cat}/\mathsf{X}$ 沿初始函子类的局部化。最后,我们将此结果推广到 2-范畴情形,证明在以任意局部可展示 2-范畴代替 $\mathsf{Cat}$ 时的类似结论。

英文摘要:

Lifts of categorical diagrams $D\colon\mathsf{J}\to\mathsf{X}$ against discrete opfibrations $π\colon\mathsf{E}\to\mathsf{X}$ can be interpreted as presenting solutions to systems of equations. With this interpretation in mind, it is natural to ask if there is a notion of equivalence of diagrams $D\simeq D'$ that precisely captures the idea of the two diagrams "having the same solutions''. We give such a definition, and then show how the localisation of the category of diagrams in $\mathsf{X}$ along such equivalences is isomorphic to the localisation of the slice category $\mathsf{Cat}/\mathsf{X}$ along the class of initial functors. Finally, we extend this result to the 2-categorical setting, proving the analogous statement for any locally presentable 2-category in place of $\mathsf{Cat}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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