Tootfinder

Unirational quasi-hyperelliptic surfaces in characteristic five
Hiroyuki Ito, Shota Takayashiki
https://arxiv.org/abs/2508.17790 https://arxiv.org/pdf/2508…

Unirational quasi-hyperelliptic surfaces in characteristic five
As a generalization of a quasi-elliptic surface, there is a quasi-hyperelliptic surface, a nonsingular projective surface which has a fibration structure whose general fiber is a quasi-hyperelliptic curve ($=$ singular hyperelliptic curve with one cuspidal singular point) of genus $(p-1)/2$ in characteristic $p \ge 5$. In this paper, we consider unirational quasi-hyperelliptic surfaces in characteristic $5$, and classify singular fibers and give a formula for the arithmetic genus and the self-i…

wikipedia_growth: en-Wikipedia links (2007)
The network of hyperlinks among English wikipedia pages, in 2007. An edge (i,j) indicates that article i hyperlinks to article j, and each edge is timestamped with its creation.
This network has 1870709 nodes and 39953145 edges.
Tags: Informational, Web graph, Unweighted, Timestamps
https:/…

There is a slackbuild for RiverWM, but it's very old. Grabbed the rpm from Fedora y'day and added River to my Slackware-nwg setup. Niri, river, hyprland and sway. For my panels to behave correctly I use nwg-panel (with niri-tasks) on Niri and Waybar on River. Nwg-panel with the hyprland config on Hyprland. Now I'm merging the applications, so keybinds relate to the same applications across the board.
@…

Hyperelliptic Jacobians in Isogeny Classes of Abelian Threefolds Over Finite Fields
Matvey Borodin, Liam May
https://arxiv.org/abs/2508.16885 https://arxiv…

Hyperelliptic Jacobians in Isogeny Classes of Abelian Threefolds Over Finite Fields
We present new criteria that obstruct an isogeny class of abelian varieties over a finite field with a given Weil polynomial from containing a Jacobian of a genus-3 hyperelliptic curve. Based on our analysis of the Weil polynomials of three-dimensional abelian varieties over finite fields up to $\mathbb{F}_{25}$ using the data in the L-functions and Modular Forms Database, we conjecture a collection of apparent obstructions. We provide a survey of known and conjectured results related to this p…

Correspondences on hyperelliptic surfaces, combination theorems, and Hurwitz spaces
Sabyasachi Mukherjee, S. Viswanathan
https://arxiv.org/abs/2508.18711 https://

Correspondences on hyperelliptic surfaces, combination theorems, and Hurwitz spaces
We construct a general class of correspondences on hyperelliptic Riemann surfaces of arbitrary genus that combine finitely many Fuchsian genus zero orbifold groups and Blaschke products. As an intermediate step, we first construct analytic combinations of these objects as partially defined maps on the Riemann sphere. We then give an algebraic characterization of these analytic combinations in terms of hyperelliptic involutions and meromorphic maps on compact Riemann surfaces. These involutions …

Connections between hyperlinearity, stability and character rigidity for higher rank lattices
Alon Dogon, Itamar Vigdorovich
https://arxiv.org/abs/2506.20843

Connections between hyperlinearity, stability and character rigidity for higher rank lattices
Let $Γ$ be an irreducible lattice in a semisimple Lie group of real rank at least $2$. Suppose that $Γ$ has property (T;FD), that is, its finite dimensional representations have a uniform spectral gap. We show that if $Γ$ is (flexibly) Hilbert--Schmidt stable then: $(a)$ infinite central extensions $\widetildeΓ$ of $Γ$ are not hyperlinear, and $(b)$ every character of $Γ$ is either finite-dimensional or induced from the center (character rigidity). As a consequence, a positive answer to t…

On Weil Polynomials of Hyperelliptic Curves over Finite Fields of Characteristic 2
Matvey Borodin, Liam May
https://arxiv.org/abs/2508.16886 https://arxiv.…

On Weil Polynomials of Hyperelliptic Curves over Finite Fields of Characteristic 2
We present new conditions which obstruct the existence of hyperelliptic Jacobians in isogeny classes of abelian varieties over finite fields of characteristic 2. We show that Weil polynomials of Jacobians cannot have coefficients in certain residue classes modulo 2, extending the approach of Costa et al. in arXiv:2002.02067. We prove that for 3- and 4-dimensional abelian varieties over $\mathbb{F}_{2^n}$, as $n \rightarrow\infty$, the parities of the Weil coefficients asymptotically equidistrib…

So. That laptop had a quick Slackware install (the nwg iso by @… ; I'm running that hyprland on the desktop of course). Then I added niri to it and removed hyprland and sway 😜! I'll look up that previous config.kdl and start tweaking that Thinkpad tomorrow. With the included DankMaterialShell. Already looking forward to it 🥳

foldoc: FOLDOC entries (2002)
A network of hyperlinks among entries in the Free On-line Dictionary of Computing (FOLDOC, www.foldoc.org), an online dictionary of acronyms and technical terms for computers. An edge points from i to j if the term j is referred to in the entry for term i. Edge weight denotes number of uses of the same term.
This network has 13356 nodes and 120238 edges.
Tags: Informational, Web graph, Weighted

polblogs: Political blogs network (2004)
A directed network of hyperlinks among a large set of U.S. political weblogs from before the 2004 election. Includes blog political affiliation as metadata.
This network has 1490 nodes and 19090 edges.
Tags: Informational, Web graph, Unweighted, Metadata
https://networks.skewed.d…