Zero divisor and unit elements with support of size 4 in group algebras
  of torsion free groups
Hopf Galois structures on extensions of degree twice an odd prime square
  and their associated left braces
Document watermarking based on digital holographic principle Learning Paths from Signature Tensors The Report on China-Spain Joint Clinical Testing for Rapid COVID-19 Risk
  Screening by Eye-region Manifestations Approximate substitutions and the normal ordering problem Asymptotics for Hankel Determinants Associated to a Hermite Weight with
  a Varying Discontinuity Super-soft symmetry energy encountering non-Newtonian gravity in neutron
  stars Non-Fermi liquid behaviour from dynamical effects of impurity scattering
  in correlated Fermi liquids Multi-polaron solutions, nonlocal effects and internal modes in a
  nonlinear chain Assessing the Safety and Reliability of Autonomous Vehicles from Road
  Testing Biocosmology: Towards the birth of a new science Einstein-Gauss-Bonnet gravity with nonlinear electrodynamics Computation using Noise-based Logic: Efficient String Verification over
  a Slow Communication Channel A Systematic Mapping Study in AIOps Dynamical Decomposition of Bilinear Control Systems subject to
  Symmetries A dark state of Chern bands: Designing flat bands with higher Chern
  number Non-Adiabatic Solution to the Time Dependent Quantum Harmonic Oscillator A new renormalon in two dimensions Forced transport of deformable containers through narrow constrictions
math.GR math.RA