SearcharxivSearch

arXiv · 2602.20184

The Adams differentials on the $e$-family

Abstract

The New Doomsday Conjecture (Minami, Amer. J. Math., 1995) states that, for any nonzero $\mathrm{Sq}^0$-family, only finitely many terms in this family survive to the $E_\infty$-page. On the Adams $1$ and $2$-line, the conjecture, which corresponds to the Hopf invariant problem and the Kervaire invariant problem, were solved by Adams (Ann. of Math., 1960) and Hill-Hopkins-Ravenel (arXiv:0908.3724), respectively. On the Adams $3$-line, Burklund and Xu (arXiv:2302.11869) established a family of nontrivial differentials on the $h_j^3$ family, and in particular developed the Burklund-Xu Spectral Sequence, to study the non-triviality of its target on the Adams $E_2$-page. In this paper, we use the Burklund-Xu Spectral Sequence to establish the non-triviality of a product on the Adams $6$-line. Combining this with Bruner's formula by Bruner et al. (LNM 1176, 1986), we prove the New Doomsday Conjecture for the $e$-family on the Adams $4$-line.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Runji Li, Yuxuan Li. 2026-02-20. The Adams differentials on the $e$-family. https://arxiv.org/abs/2602.20184

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

Homogeneous Milnor fibers and Kato--Matsumoto bounds via simplicial multiwedges

For every $n\geq 3$ and $s\geq 2$, we construct a homogeneous polynomial of degree $n(n+1)/2$ whose Milnor fiber is exactly $2s$-connected and whose rational cohomology contains a strictly defined nontrivial $n$-fold Massey product on classes of degree $2s+1$, implying that the Milnor fiber is non-formal, while attaining the Kato--Matsumoto connectivity bound. Our construction is based on the simplicial multiwedges of the nerve complexes of simple polytopes introduced by Limonchenko, combined with Suciu's realization of weighted homogeneous Milnor fibers. We thereby answer two problems posed by Suciu.

math.AT

The homotopy types of directed path and trace spaces

We construct a saturated directed space with a Hausdorff $\Delta$-generated underlying space and two distinct points such that the trace space between them is homeomorphic to a square, whereas the directed path space has a nontrivial fundamental group. In particular, the canonical quotient map is not a weak homotopy equivalence. The same conclusion holds for regular directed paths modulo increasing homeomorphisms.

math.AT

Moduli spaces of geometric functorial field theories

We develop tools to compute moduli spaces of geometric functorial field theories as mapping spaces of equivariant simplicial presheaves. Given a d-dimensional geometric structure F, presented as a presheaf on the site of smooth families of d-manifolds, we define its Cartesian realization, which is an O(d)-equivariant simplicial presheaf on the site of Cartesian spaces. We use Cartesian realizations to present the moduli space of functorial field theories with geometric structure F as a mapping space between O(d)-equivariant simplicial presheaves. In a companion paper, we use this result to compute the moduli space of smooth one-dimensional oriented Riemannian functorial field theories valued in an arbitrary smooth symmetric monoidal infinity-category.

math.AT