Berkovich 2-motives and normed ring stacks
Berkovich 2-motives and normed ring stacks
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DissertationDate of Exam
12.03.2026Date of Publication
24.03.2026Advisor
Scholze, PeterCo-Referee
Bachmann, TomMetadata
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Abstract
The de Rham stack construction of Simpson shows that D-modules are quasicoherent sheaves on a modified geometry. Drinfeld furthermore introduced the ring stack perspective (aka transmutation, following Bhatt), which states that a coefficient theory is determined by a ring stack. Scholze proposed relating this idea to motivic realizations using (∞, 2)-categorical language.
In this paper, we formulate and prove a precise version of this principle: The presentable category of kernels of motivic homotopy theory is the linearly symmetric monoidal (∞, 2)-category that is freely generated by a homologically trivial smooth sutured ring stack. We also prove the étale version of this statement, reducing étale descent to Kummer and Artin–Schreier conditions. Lastly, we prove an analytic version connecting Scholze’s Berkovich motives and ring stacks with an absolute value. This is useful to construct realizations in analytic geometry, such as the Habiro and Hyodo–Kato realizations.
In this paper, we formulate and prove a precise version of this principle: The presentable category of kernels of motivic homotopy theory is the linearly symmetric monoidal (∞, 2)-category that is freely generated by a homologically trivial smooth sutured ring stack. We also prove the étale version of this statement, reducing étale descent to Kummer and Artin–Schreier conditions. Lastly, we prove an analytic version connecting Scholze’s Berkovich motives and ring stacks with an absolute value. This is useful to construct realizations in analytic geometry, such as the Habiro and Hyodo–Kato realizations.
Classification (DDC)
510 MathematikAoki, Ko: Berkovich 2-motives and normed ring stacks. - Bonn, 2026. - Dissertation, Rheinische Friedrich-Wilhelms-Universität Bonn.
Online-Ausgabe in bonndoc: https://nbn-resolving.org/urn:nbn:de:hbz:5-88743
Online-Ausgabe in bonndoc: https://nbn-resolving.org/urn:nbn:de:hbz:5-88743
@phdthesis{handle:20.500.11811/13999,
urn: https://nbn-resolving.org/urn:nbn:de:hbz:5-88743,
author = {{Ko Aoki}},
title = {Berkovich 2-motives and normed ring stacks},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2026,
month = mar,
note = {The de Rham stack construction of Simpson shows that D-modules are quasicoherent sheaves on a modified geometry. Drinfeld furthermore introduced the ring stack perspective (aka transmutation, following Bhatt), which states that a coefficient theory is determined by a ring stack. Scholze proposed relating this idea to motivic realizations using (∞, 2)-categorical language.
In this paper, we formulate and prove a precise version of this principle: The presentable category of kernels of motivic homotopy theory is the linearly symmetric monoidal (∞, 2)-category that is freely generated by a homologically trivial smooth sutured ring stack. We also prove the étale version of this statement, reducing étale descent to Kummer and Artin–Schreier conditions. Lastly, we prove an analytic version connecting Scholze’s Berkovich motives and ring stacks with an absolute value. This is useful to construct realizations in analytic geometry, such as the Habiro and Hyodo–Kato realizations.},
url = {https://hdl.handle.net/20.500.11811/13999}
}
urn: https://nbn-resolving.org/urn:nbn:de:hbz:5-88743,
author = {{Ko Aoki}},
title = {Berkovich 2-motives and normed ring stacks},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2026,
month = mar,
note = {The de Rham stack construction of Simpson shows that D-modules are quasicoherent sheaves on a modified geometry. Drinfeld furthermore introduced the ring stack perspective (aka transmutation, following Bhatt), which states that a coefficient theory is determined by a ring stack. Scholze proposed relating this idea to motivic realizations using (∞, 2)-categorical language.
In this paper, we formulate and prove a precise version of this principle: The presentable category of kernels of motivic homotopy theory is the linearly symmetric monoidal (∞, 2)-category that is freely generated by a homologically trivial smooth sutured ring stack. We also prove the étale version of this statement, reducing étale descent to Kummer and Artin–Schreier conditions. Lastly, we prove an analytic version connecting Scholze’s Berkovich motives and ring stacks with an absolute value. This is useful to construct realizations in analytic geometry, such as the Habiro and Hyodo–Kato realizations.},
url = {https://hdl.handle.net/20.500.11811/13999}
}
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