Sequences of Prime Reciprocals. Preliminaries
Grabowski, Adam
On Two Alternative Axiomatizations of Lattices by McKenzie and Sholander
Grabowski, Adam, Sawicki, Damian
Polygonal Numbers
Grabowski, Adam
Tarski Geometry Axioms. Part IV – Right Angle
Coghetto, Roland, Grabowski, Adam
Tarski Geometry Axioms. Part V – Half-planes and Planes
Coghetto, Roland, Grabowski, Adam
On the Lattice of Intervals and Rough Sets
Grabowski, Adam, Jastrzębska, Magdalena