Penalty Interior-Point Method Fails to Converge
Characterization theorem for best polynomial spline approximation with
  free knots
Cold Quark Matter A null infinity layer for wave scattering Equivalent Model of Transient Gyrotron Cathode Response Habitability is a continuous property of nature Majorana and the theoretical problem of photon-electron scattering Unexpected 3+ valence of iron in FeO$_2$, a geologically important
  material lying "in between" oxides and peroxides Syntactic-GCN Bert based Chinese Event Extraction Superscatterer: Enhancement of scattering with complementary media Agnostic System Identification for Model-Based Reinforcement Learning Morphology of three-body quantum states from machine learning A multi-agent reinforcement learning model of common-pool resource
  appropriation L 1-norm double backpropagation adversarial defense Path integrals and nonlinear optical tweezers The Structure of First-Order Causality (extended version) A-infinity Persistence Invertibility conditions for field transformations with derivatives:
  toward extensions of disformal transformation with higher derivatives Low--Temperature Plasma Technology: Impact on Indian Rural Life COVID-19 Pandemic: Identifying Key Issues using Social Media and Natural
  Language Processing Solubility of Iron in Metallic Hydrogen and Stability of Dense Cores in
  Giant Planets Analytical invariant manifolds near unstable points and the structure of
  chaos
math.OC math.NA