1. Approximation by crystal-refinable functions

   • Ursula Molter
   • María del Carmen Moure
   • Alejandro Quintero

   Original Paper 24 October 2019 Pages: 1 - 21

2. On 2-knots and connected sums with projective planes

   • Vincent Longo

   Original Paper 25 September 2019 Pages: 23 - 27

   

3. Plane curves with three syzygies, minimal Tjurina curves, and nearly cuspidal curves

   • Alexandru Dimca
   • Gabriel Sticlaru

   Original Paper 09 October 2019 Pages: 29 - 49

4. On hyperbolicity and virtual freeness of automorphism groups

   • Olga Varghese

   Original Paper 16 October 2019 Pages: 51 - 60

5. Failure of the \(L^1\) pointwise ergodic theorem for \(\mathrm {PSL}_2(\mathbb {R})\)

   • Lewis Bowen
   • Peter Burton

   Original Paper 19 October 2019 Pages: 61 - 80

   

6. Ricci flow on surfaces of revolution: an extrinsic view

   • Vincent E. Coll Jr.
   • Jeff Dodd
   • David L. Johnson

   Original Paper 24 October 2019 Pages: 81 - 94

   

7. Configurations of flags in orbits of real forms

   • Elisha Falbel
   • Marco Maculan
   • Giulia Sarfatti

   Original Paper 24 October 2019 Pages: 95 - 156

   

8. Poisson structure on the moduli spaces of sheaves of pure dimension one on a surface

   • Indranil Biswas
   • Tomás L. Gómez

   Original Paper 26 October 2019 Pages: 157 - 165

9. Distance difference representations of Riemannian manifolds

   • Sergei Ivanov

   Original Paper 30 October 2019 Pages: 167 - 192

   

10. Foliations on \(\mathbb {CP}^2\) with a unique singular point without invariant algebraic curves

    • Claudia R. Alcántara
    • Rubí Pantaleón-Mondragón

    Original Paper 29 October 2019 Pages: 193 - 200

11. Isometry groups of closed Lorentz 4-manifolds are Jordan

    • Ignasi Mundet i Riera

    Original Paper 01 November 2019 Pages: 201 - 207

12. Four-manifolds with harmonic 2-forms of constant length

    • Inyoung Kim

    Original Paper 09 November 2019 Pages: 209 - 218

13. Hopf surfaces in locally conformally Kähler manifolds with potential

    • Liviu Ornea
    • Misha Verbitsky

    Original Paper 18 November 2019 Pages: 219 - 226

14. New construction of ruled real hypersurfaces in a complex hyperbolic space and its applications

    • Makoto Kimura
    • Sadahiro Maeda
    • Hiromasa Tanabe

    Original Paper 22 November 2019 Pages: 227 - 242

15. Primary singularities of vector fields on surfaces

    • M. W. Hirsch
    • F. J. Turiel

    Original Paper 22 November 2019 Pages: 243 - 253

16. The horofunction boundary of the infinite dimensional hyperbolic space

    • Floris Claassens

    Original Paper Open access 27 November 2019 Pages: 255 - 263

17. Existence of two-parameter crossings, with applications

    • Jonathan D. Williams

    Original Paper 21 November 2019 Pages: 265 - 286

    

18. Quasi-morphisms on contactomorphism groups and Grassmannians of 2-planes

    • Frol Zapolsky

    Original Paper 02 December 2019 Pages: 287 - 309

19. Group Actions on cyclic covers of the projective line

    • Aristides Kontogeorgis
    • Panagiotis Paramantzoglou

    Original Paper 07 December 2019 Pages: 311 - 334

    

20. The action dimension of Artin groups

    • Giang Le

    Original Paper 23 December 2019 Pages: 335 - 354

    

21. Embedding non-projective Mori dream space

    • Michele Rossi

    Original Paper 13 December 2019 Pages: 355 - 393

    

22. Automorphisms of the Hilbert schemes of n points of a rational surface and the anticanonical Iitaka dimension

    • Taro Hayashi

    Original Paper 08 January 2020 Pages: 395 - 407

23. Finite quotients of braid groups

    • Alice Chudnovsky
    • Kevin Kordek
    • Caleb Partin

    Original Paper 14 February 2020 Pages: 409 - 416