Translations and HomothetiesExplores translations and homotheties, discussing their properties and practical applications in preserving geometric characteristics.
Möbius inversion: posetsCovers the Möbius inversion for posets, defining partially ordered sets and explaining the incidence algebra.
History UnfoldedDelves into the evolution of a valley into a historical gathering place for students.
Möbius inversion formulaCovers the Möbius inversion formula and its proof, including the change of variables in summation.