Aufgabensammlung Combinatorial geometry Combinatorics -- Designs and configurations -- Difference sets (number-theoretic, group-theoretic, etc.) Combinatorics -- Designs and configurations -- Finite geometries Combinatorics -- Designs and configurations -- Matrices (incidence, Hadamard, etc.) Difference sets Differenzmenge Geometry -- Finite geometry and special incidence structures -- Affine and projective planes Group theory and generalizations -- Representation theory of groups -- Ordinary representations and characters Kombinatorische Geometrie Konferenzschrift 2016 Lie groups Lie groups Problems, exercises, etc Lie-Gruppe Mathematics Mathematics / Study and teaching Mathematics Education Mathematics, general Mathematik Matrix groups Matrizengruppe Number theory -- Algebraic number theory: global fields -- Algebraic numbers; rings of algebraic integers MATHEMATICS / Algebra / Intermediate