Beiträge zur Algebra und Geometrie (BZAG) / Contributions to Algebra and Geometry is an international journal of mathematics founded at Martin-Luther-Universität Halle-Wittenberg in 1971. BZAG aims to publish high quality original mathematical research where algebraic and/or geometric structures play a substantial role. Besides papers in the classical areas of algebra, algebraic geometry and geometry, the journal also welcomes contributions that include algorithmic, computational, combinatorial, topological, differential and number theoretic topics with a distinct algebraic or geometric flavor. BZAG puts special emphasis on keeping the reviewing process short. The back issues of the journal are available at the European Digital Mathematics Library (EuDML) at: https://eudml.org/journal/10170 (Vols. 1-33, 1971-1992) https://eudml.org/journal/10084 (Vols. 34-51, 1993-2010) .