Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Question: Using the square lattice, how many symmetry types are possible? As we move to create 4-fold symmetry, we might think of pinwheels, Greek and Maltese crosses, certain flowers (the familycruciferea), and, alas, the swastika. The swastika served as a lovely element of Hindu and Native American art for centuries until it was spoiled in the 1900s. If the reader experiments with the recipes in this chapter, this culturally offensive symbol is likely to appear; you can make it go away by changing the parameters. Strange that a warning label is necessary on one of our recipes.
Applying the