1 citations · 2 across the 3 of their papers we have counts for
3 papers
math.MG2021
Forcing nonperiodic tilings with one tile using a seed
Bernhard Klaassen
The so-called "einstein problem" (a pun playing with the famous scientist's name and the German term "ein Stein" for "one stone") asks for a simply connected prototile only allowin…
math.MG2021★ 1 cited
Is the spiral effect psychological?
Bernhard Klaassen
In 2017 a definition of spiral tilings was given, thereby answering a question posed by Grünbaum and Shephard in the late 1970s. The author had the pleasure to discuss the topic vi…
math.MG2015★ 1 cited
Rotationally Symmetric Tilings with Convex Pentagons and Hexagons
Bernhard Klaassen
In contrast to many known results concerning periodic tilings of the Euclidean plane with pentagons, here tilings with rotational symmetry are investigated. A certain class of conv…