Tiling theory provides a wonderful opportunity to illustrate both the beauty and utility of
mathematics. It has all the relevant ingredients: there are stunning pictures; open problems …

In this paper we give a complete description about normal monohedral tilings of a convex
disc with smooth boundary where we have at most three topological discs as tiles. This …

A new tile (polygon) with surround number 2 is presented. The tile can be completely
surrounded by two copies of itself. Moreover the tile admits periodic and non-periodic tilings …

The dragon tile and other solutions for enclosure problems Page 1 The dragon tile and other
solutions for enclosure problems Walter Trump retired director of studies ORCID 0000-0001-6011-7233 …