Expertini Research Research

Browse Research Papers

23,443+ open-access research outputs.

โœ• Clear
๐Ÿ” emil ringh ๐Ÿ“‚ Mathematics
Showing 23443 results for "emil ringh" in Mathematics
Mathematics Preprint PDF DOI

Rational characteristic classes of bundles with fibre a product of spheres

Jan McGarry-Furriol ยท 2026

We prove the existence of many non-trivial characteristic classes of smooth oriented bundles with fibre a product $ S^{n}\times S^{n} $ of odd-dimensional spheres. We do so by proving injectivity of tโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Stein's square function associated with the Bochner-Riesz means on M\'etivier groups and its applications

Joydwip Singh ยท 2026

In this paper, we study the $L^p$-boundedness of Stein's square function $\mathfrak{S}^{\alpha}(\mathcal{L})$ associated with the sub-Laplacian $\mathcal{L}$ on M\'etivier group $G$. A key aspect of oโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

A Ring structure on the Class of Combinatorial Games

Harry Altman, Paolo Lipparini ยท 2026

J. Conway defined useful operations on the Class of combinatorial games and also introduced a notion of equivalence between games. Conway showed that, under his equivalence, games form a Group. Howeveโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Parseval-Rayleigh identities for graded Artinian Gorenstein algebras

Mykola Pochekai ยท 2026

We formulate and prove Parseval-Rayleigh identities for graded Artinian Gorenstein algebras over fields of positive characteristic. Specializing the general result, we provide an alternative proof of โ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Polynomial Maps with Constants on Matrix Algebra

Prachi Saini, Anupam Singh ยท 2026

Let $\mathcal A$ be an $\mathbb F$-algebra and $\omega \in \mathcal A\langle x_1, \ldots, x_m \rangle$ which defines a map $\mathcal A^m \rightarrow \mathcal A$ by evaluation, called a polynomial map โ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

$\mathbb{K}$-framings and $\mathbb{K}$-quadratic forms on surfaces

Nariya Kawazumi ยท 2026

We introduce the notions of $\mathbb{K}$-framings, based $\mathbb{K}$-framings and relative $\mathbb{K}$-framings of a compact connected oriented surface $\Sigma$ for any commutative ring $\mathbb{K}$โ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Torus Equivariant Cohomology for the $\Delta$-Springer Fiber

Raymond Chou ยท 2026

We define a torus $U \subset T = (\mathbb{C}^\times)^K$ which acts on the $\Delta$-Springer varieties $Y_{n,\lambda,s}$ defined by Griffin-Levinson-Woo and give a Borel-style presentation for the equiโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Perfectoid splitting and global $+$-regularity for smooth hypersurfaces

Shou Yoshikawa ยท 2026

In this paper, we prove that smooth Calabi--Yau hypersurfaces of degree $d$ over complete unramified discrete valuation rings with residue characteristic $p$ are perfectoid split if $p$ is larger thanโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

k[x]-modules and Core-Nilpotent endomorphisms

Diego Alba Alonso, Javier Sanchez Gonzalez ยท 2026

Core-nilpotent endomorphisms over an arbitrary vector space form the largest subset of the ring of endomorphisms over that arbitrary vector space which admit a decomposition as sum of two endomorphismโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

On main eigenvalues of zero-divisor graphs of reduced rings

Sakshi Jain, Y. M. Borse, R. Barabde ยท 2026

The problem of characterizing graphs with a prescribed number of main eigenvalues is a long-standing problem in spectral graph theory. Although some constructions are known, only a few produce infinitโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

On a group ring identity related to the Alon-Jaeger-Tarsi conjecture

Janos Nagy, Peter Pal Pach ยท 2026

In this note we formulate a conjecture about two group ring identities and prove that it would imply the Alon-Jaeger-Tarsi conjecture.โ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Metrics on triangulated categories and restrictions of (co)-$t$-structures

Wei Hu, Ziheng Liu ยท 2026

This paper explores the restriction behavior of silting-induced $t$-structures and co-$t$-structures on triangulated categories endowed with metrics. For compactly generated triangulated categories adโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Unitary representations and von Neumann's continuous geometries

Friedrich Martin Schneider, Andreas Thom ยท 2026

We prove that the unit group of a non-discrete irreducible, continuous ring, in the sense of John von Neumann, does not admit any non-trivial unitary representation continuous with respect to the stroโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

On $S$-Noetherian Lattices

Sachin Sarode, Chetan Patil, Vinayak Joshi ยท 2026

In this paper, we define and study $S$-Noetherian lattices as a natural generalization of Noetherian rings. We prove that a ring $R$ is $S$-Noetherian if and only if its ideal lattice, $Id(R)$, is $S_โ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Cut and paste invariants of moduli spaces of stable maps to toric surfaces

Cat Rust ยท 2026

We study moduli spaces of logarithmic stable maps to proper toric surfaces with prescribed tangency conditions to the toric boundary. Fixing a surface, we define a chamber decomposition on the space oโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

The coordinate ring of the universal centralizer via Demazure operators

Tom Gannon, Victor Ginzburg ยท 2026

We give a simple description of the coordinate ring of the universal centralizer associated to a simply connected semisimple group. To this end, we prove a general result on Weil restriction of affineโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Semistable reductions and minimalities of invariants for group scheme actions on projective schemes

Rin Gotou, Yusuke Okuyama ยท 2026

Let $K$ be an algebraically closed and complete non-archimedean and non-trivially valued field, and let $G$ be a reductive group scheme acting on a flat projective scheme $X$ defined over the base rinโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Some results on naive transcendence in the ring of integers modulo infinitely large primes

Toshiki Matsusaka, Shin-ichiro Seki ยท 2026

This paper presents various transcendence results in the ring of integers modulo infinitely large primes $\mathcal{A}$. In the ring $\mathcal{A}$, one can consider two notions of transcendence. One isโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Atom spectra of symmetric monoidal abelian categories and classification of subcategories

Shunya Saito ยท 2026

We extend the classification results for torsion classes and torsion-free classes in the category of finitely generated modules over a commutative noetherian ring to suitable symmetric monoidal closedโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Exact Closed-Form Formulae for Linear and Circular Continuous Scan Statistics: $P_c(N - 1; N, w)$, $P_c(3; N, w)$, and $P(3; N, w)$

Haowei Yuan ยท 2026

The continuous linear $P(k; N, w)$ and circular scan statistics $P_c(k; N, w)$ are fundamental tools in probability and spatial statistics, frequently used to detect clustering in uniform data. Let $Xโ€ฆ

Read Paper โ†’
Page 1 of 1173 Next โ†’