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Related papers: Classical and motivic Adams charts

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This document contains large-format Adams-Novikov charts that compute the classical 2-complete stable homotopy groups. The charts are essentially complete through the 60-stem. We believe that these are the most accurate and extensive charts…

Algebraic Topology · Mathematics 2020-01-24 Daniel C. Isaksen

We present a detailed analysis of 2-complete stable homotopy groups, both in the classical context and in the motivic context over C. We use the motivic May spectral sequence to compute the cohomology of the motivic Steenrod algebra over C…

Algebraic Topology · Mathematics 2014-12-17 Daniel C. Isaksen

We survey computations of stable motivic homotopy groups over various fields. The main tools are the motivic Adams spectral sequence, the motivic Adams-Novikov spectral sequence, and the effective slice spectral sequence. We state some…

Algebraic Topology · Mathematics 2019-03-08 Daniel C. Isaksen , Paul Arne Østvær

We compute some R-motivic stable homotopy groups. For $s - w \leq 11$, we describe the motivic stable homotopy groups $\pi_{s,w}$ of a completion of the R-motivic sphere spectrum. We apply the $\rho$-Bockstein spectral sequence to obtain…

Algebraic Topology · Mathematics 2020-01-13 Eva Belmont , Daniel C. Isaksen

We establish a differential $d_2(D_1)=h_0^2h_3g_2$ in the $51$-stem of the Adams spectral sequence at the prime $2$, which gives the first correct calculation of the stable 51 and 52 stems. This differential is remarkable since we know of…

Algebraic Topology · Mathematics 2014-11-14 Daniel C. Isaksen , Zhouli Xu

We study the $\mathbb{F}_2$-synthetic Adams spectral sequence. We obtain new computational information about $\mathbb{C}$-motivic and classical stable homotopy groups.

Algebraic Topology · Mathematics 2024-08-05 Robert Burklund , Daniel C. Isaksen , Zhouli Xu

A C-motivic modular forms spectrum mmf has recently been constructed. This article presents detailed computational information on the Adams spectral sequence for mmf. This information is essential for computing with the C-motivic and…

Algebraic Topology · Mathematics 2018-11-21 Daniel C. Isaksen

We present some data on the cohomology of the motivic Steenrod algebra over an algebraically closed field. We discuss several features of the associated Adams spectral sequence, including the basic construction and convergence properties.…

Algebraic Topology · Mathematics 2009-01-13 Daniel Dugger , Daniel C. Isaksen

We compute the 2-primary $C_2$-equivariant stable homotopy groups $\pi^{C_2}_{s,c}$ for stems between 0 and 25 (i.e., $0 \leq s \leq 25$) and for coweights between -1 and 7 (i.e., $-1 \leq c \leq 7)$. Our results, combined with periodicity…

Algebraic Topology · Mathematics 2024-04-24 Bertrand J. Guillou , Daniel C. Isaksen

We study the stable motivic homotopy groups $\pi_{s,w}$ of the 2-completion of the motivic sphere spectrum over $\mathbb{C}$. When arranged in the $(s,w)$-plane, these groups break into four different regions: a vanishing region, an…

Algebraic Topology · Mathematics 2015-05-07 Bogdan Gheorghe , Daniel C. Isaksen

Using techniques in motivic homotopy theory, especially the theorem of Gheorghe, the second and the third author on the isomorphism between motivic Adams spectral sequence for $C{\tau}$ and the algebraic Novikov spectral sequence for…

Algebraic Topology · Mathematics 2023-01-20 Daniel C. Isaksen , Guozhen Wang , Zhouli Xu

We establish an isomorphism between the stable homotopy groups of the 2-completed motivic sphere spectrum over the real numbers and the corresponding stable homotopy groups of the 2-completed Z/2-equivariant sphere spectrum, in a certain…

Algebraic Topology · Mathematics 2016-03-31 Daniel Dugger , Daniel C. Isaksen

We make some computations in stable motivic homotopy theory over Spec \mathbb{C}, completed at 2. Using homotopy fixed points and the algebraic K-theory spectrum, we construct a motivic analogue of the real K-theory spectrum KO. We also…

Algebraic Topology · Mathematics 2010-02-12 Daniel C. Isaksen , Armira Shkembi

These notes, written version of a Bourbaki talk, survey Morel-Voevodsky's motivic homotopy theory over a field, with a focus on computations of motivic homotopy sheaves, both stable and unstable. We also describe Isaksen-Wang-Xu's…

Algebraic Geometry · Mathematics 2025-10-21 Frédéric Déglise

We analyze the $\mathbb{C}$-motivic (and classical) Adams-Novikov spectral sequence for the $\mathbb{C}$-motivic modular forms spectrum $\mathit{mmf}$ (and for the classical topological modular forms spectrum $\mathit{tmf}$). We primarily…

Algebraic Topology · Mathematics 2025-07-15 Daniel C. Isaksen , Hana Jia Kong , Guchuan Li , Yangyang Ruan , Heyi Zhu

In this paper we explore the isotropic stable motivic homotopy category constructed from the usual stable motivic homotopy category, following the work of Vishik on isotropic motives (see [29]), by killing anisotropic varieties. In…

Algebraic Geometry · Mathematics 2022-08-08 Fabio Tanania

This article computes some motivic stable homotopy groups over R. For 0 <= p - q <= 3, we describe the motivic stable homotopy groups of a completion of the motivic sphere spectrum. These are the first four Milnor-Witt stems. We start with…

Algebraic Topology · Mathematics 2017-01-04 Daniel Dugger , Daniel C. Isaksen

In this article we study thick ideals defined by periodic self maps in the stable motivic homotopy category over $\mathbb{C}$. In addition, we extend some results of Ruth Joachimi about the relation between thick ideals defined by motivic…

Algebraic Topology · Mathematics 2021-01-25 Sven-Torben Stahn

We discuss the current state of knowledge of stable homotopy groups of spheres. We describe a new computational method that yields a streamlined computation of the first 61 stable homotopy groups, and gives new information about the stable…

Algebraic Topology · Mathematics 2022-05-25 Daniel C. Isaksen , Guozhen Wang , Zhouli Xu

We compute the 2-line of stable homotopy groups of motivic spheres over fields of characteristic not two in terms of motivic cohomology and hermitian K-groups.

Algebraic Geometry · Mathematics 2021-04-01 Oliver Röndigs , Markus Spitzweck , Paul Arne Østvær
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