activity
20042026
most citedThe Relativized Second Eigenvalue Conjecture of Alon

17 citations · 95 across the 27 of their papers we have counts for

collaborators

29 papers

math.CO2026

Duality and a Canonical Sheaf in Periodic Riemann Functions

Nicolas Folinsbee, Joel Friedman

Let be a Riemann function whose weight is a perfect matching. Then there is a family of sheaves of -vector spaces $\{{M}_{W,{\bf d}}\}_{…

cond-mat.str-el2022★ 10 cited

Surface state evolution induced by magnetic order in axion insulator candidate EuIn2As2

Mingda Gong, Divyanshi Sar, Joel Friedman +4

Gapping of Dirac surface states through time reversal symmetry breaking may realize the axion insulator state in condensed matter. Despite tremendous efforts, only a few material s…

math.CO2022

Euler Characteristics and Duality in Riemann Functions and the Graph Riemann-Roch Rank

Nicolas Folinsbee, Joel Friedman

By a {\em Riemann function} we mean a function such that is equals for s…

math.CO2022

Generalized Riemann Functions, Their Weights, and the Complete Graph

Nicolas Folinsbee, Joel Friedman

By a {\em Riemann function} we mean a function such that is equals for sufficiently small, and equals $d_1+\c…

cs.IT2022

Coordination and Discoordination in Linear Algebra, Linear Information Theory, and Coded Caching

Joel Friedman, Amir Tootooni

In the first part of this paper we develop some theorems in linear algebra applicable to information theory when all random variables involved are linear functions of the individua…

cond-mat.str-el2022★ 6 cited

Coexisting Kondo hybridization and itinerant f-electron ferromagnetism in UGe2

Ioannis Giannakis, Divyanshi Sar, Joel Friedman +6

Kondo hybridization in partially filled f-electron systems conveys significant amount of electronic states sharply near the Fermi energy leading to various instabilities from super…