Constructing partial geometries from overlarge sets of Steiner systems Sven ReichardAndrew Woldar Original Paper 12 March 2021 Pages: 1 - 17
Propagation of curved folding: the folded annulus with multiple creases exists Leonardo Alese Original Paper Open access 16 March 2021 Pages: 19 - 43
Convexity limit angles for isoptics Magdalena Skrzypiec Original Paper Open access 04 March 2021 Pages: 55 - 67
Topology of the tropical moduli spaces \(\Delta _{2,n}\) Melody Chan Original Paper 25 February 2021 Pages: 69 - 93
The classification of convex polygons with triangular area or perimeter bisecting deltoids Allan BereleStefan Catoiu Original Paper 08 April 2021 Pages: 95 - 114
Poncelet plectra: harmonious curves in cosine space Daniel JaudDan ReznikRonaldo Garcia Original Paper 29 September 2021 Pages: 115 - 131
Some properties of rational conic fibrations Antonio LanteriRaquel Mallavibarrena Original Paper 07 January 2021 Pages: 133 - 147
Reducibility of n-ary semigroups: from quasitriviality towards idempotency Miguel CouceiroJimmy DevilletPierre Mathonet Original Paper 09 January 2021 Pages: 149 - 166
Higher order z-ideals of special rings Ahmed MaatallahAli Benhissi Original Paper 10 January 2021 Pages: 167 - 177
Descent of properties of rings and pairs of rings to fixed rings Ravinder Singh Original Paper 26 February 2021 Pages: 179 - 187
On finite dimensionality of Chow groups Kalyan Banerjee Original Paper 17 March 2021 Pages: 189 - 207
Correction to: The McCoy property in Ohm–Rush algebras Neil Epstein Correction 07 April 2021 Pages: 215 - 215