Learning Weighted Automata -- More Than 1700 Years of Word Equations -- An Algebraic Geometric Approach to Multidimensional Words -- Why We Need Semirings in Automata Theory -- Unbordered Pictures: Properties and Construction -- Effective Invariant Theory of Permutation Groups using Representation Theory -- On differential uniformity of maps that may hide an algebraic trapdoor -- On the Lower Block Triangular Nature of the Incidence Matrices to Compute the Algebraic Immunity of Boolean Functions -- Weighted Unranked Tree Automata over Tree Valuation Monoids and Their Characterization by Weighted Logics -- A New Partial Key Exposure Attack on Multi-power RSA -- A Chomsky-Schutzenberger Theorem for Weighted Automata with Storage -- EF+EX Forest Algebras -- On near prime-order elliptic curves with small embedding degrees -- Key-Policy Multi-Authority Attribute-Based Encryption -- Extended Explicit Relations Between Trace, Definition Field, and Embedding Degree -- Complexity of Uniform Membership of Context-Free Tree Grammars -- Attacking BEAR and LION schemes in a realistic scenario -- Weighted Restarting Automata and Pushdown Relations -- Equivalence checking problem for finite state transducers over semigroups.