Some Properties of the $$\text{ A}_{\infty }$$-Nerve

Abstract The aim of this paper is to prove that the $$\text{ A}_{\infty }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msub> <mml:mtext>A</mml:mtext> <mml:mi>∞</mml:mi> </mml:msub> </mml:mrow> </mml:math> -nerve of two quasi-equivalent $$\text{ A}_{\infty }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msub> <mml:mtext>A</mml:mtext> <mml:mi>∞</mml:mi> </mml:msub> </mml:mrow> </mml:math> -categories (linear over a commutative ring) are weak-equivalent in the Joyal model structure. As a consequence we prove that the $$\text{ A}_{\infty }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msub> <mml:mtext>A</mml:mtext> <mml:mi>∞</mml:mi> </mml:msub> </mml:mrow> </mml:math> -nerve of a pretriangulated $$\text{ A}_{\infty }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msub> <mml:mtext>A</mml:mtext> <mml:mi>∞</mml:mi> </mml:msub> </mml:mrow> </mml:math> -category is a stable $$\infty $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>∞</mml:mi> </mml:math> -category.

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Publication Details

Journal
Milan Journal of Mathematics
Published
2026-03-02
DOI
https://doi.org/10.1007/s00032-026-00429-3
Primary Topic
Homotopy and Cohomology in Algebraic Topology
Type
article
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article

Some Properties of the $$\text{ A}_{\infty }$$-Nerve

Mattia Ornaghi
Milan Journal of Mathematics
Homotopy and Cohomology in Algebraic Topology
article

Some Properties of the $$\text{ A}_{\infty }$$-Nerve

Mattia Ornaghi
article en

Abstract

Abstract The aim of this paper is to prove that the $$\text{ A}_{\infty }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msub> <mml:mtext>A</mml:mtext> <mml:mi>∞</mml:mi> </mml:msub> </mml:mrow> </mml:math> -nerve of two quasi-equivalent $$\text{ A}_{\infty }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msub> <mml:mtext>A</mml:mtext> <mml:mi>∞</mml:mi> </mml:msub> </mml:mrow> </mml:math> -categories (linear over a commutative ring) are weak-equivalent in the Joyal model structure. As a consequence we prove that the $$\text{ A}_{\infty }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msub> <mml:mtext>A</mml:mtext> <mml:mi>∞</mml:mi> </mml:msub> </mml:mrow> </mml:math> -nerve of a pretriangulated $$\text{ A}_{\infty }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msub> <mml:mtext>A</mml:mtext> <mml:mi>∞</mml:mi> </mml:msub> </mml:mrow> </mml:math> -category is a stable $$\infty $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>∞</mml:mi> </mml:math> -category.

Milan Journal of Mathematics
University of Milan (IT)
Openalex Percentile: Top 32%
Homotopy and Cohomology in Algebraic Topology
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Some Properties of the $\text{ A}_{\infty }$-Nerve — Mattia Ornaghi · Milan Journal of Mathematics (2026) | TGRS Research Map | TGRS