Fifty New Invariants of N-Periodics in the Elliptic Billiard Dan ReznikRonaldo GarciaJair Koiller Problem Contribution 18 February 2021 Pages: 341 - 355
Integrability of Point-Vortex Dynamics via Symplectic Reduction: A Survey Klas ModinMilo Viviani Research Contribution Open access 15 October 2020 Pages: 357 - 385
On the Density of Dispersing Billiard Systems with Singular Periodic Orbits Otto Vaughn Osterman Research Contribution 21 April 2021 Pages: 387 - 406
Interpolation of Weighted Extremal Functions Alexander Rashkovskii Research Contribution Open access 16 March 2021 Pages: 407 - 417
The Yomdin–Gromov Algebraic Lemma Revisited Gal BinyaminiDmitry Novikov Research Contribution 03 May 2021 Pages: 419 - 430
Inflation of Poorly Conditioned Zeros of Systems of Analytic Functions Michael BurrAnton Leykin Research Contribution 27 May 2021 Pages: 431 - 440
Conjectures on Stably Newton Degenerate Singularities Jan Stevens Research Contribution Open access 07 June 2021 Pages: 441 - 465
A Galois–Dynamics Correspondence for Unicritical Polynomials Robin Zhang Research Contribution 09 June 2021 Pages: 467 - 481
Remarks on Joachimsthal Integral and Poritsky Property Maxim ArnoldSerge Tabachnikov Research Contribution 01 June 2021 Pages: 483 - 491