From a Geometrical Point of View explores historical and philosophical aspects of category theory, trying therewith to expose its significance in the mathematical landscape. The main thesis is that Klein 's Erlangen program in geometry is in fact a particular instance of a general and broad phenomen[...]
Rolf Lidbergs koselige trollfamilie har sommerferie og i denne boken kan du lese om alt de foretar seg i Trollskogen om sommeren.[...]