Quantum Hashing and Fingerprinting for Quantum Cryptography and Computations.- Parameterized Analysis of Art Gallery and Terrain Guarding.- Central Positions in Social Networks.- Second-Order Finite Automata.- Isomorphic Distances Among Elections.- Tandem Duplications, Segmental Duplications and Deletions, and their Applications.- Faster 2-Disjoint-Shortest-Path Algorithm.- An Improvement to Chvátal and Thomassen's Upper Bound for Oriented Diameter.- The Normalized Algorithmic Information Distance Cannot be Approximated.- Definable Subsets of Polynomial-Time Algebraic Structures.- Families of Monotonic Trees: Combinatorial Enumeration and Asymptotics.- Nested Regular Expressions can be Compiled to Small Deterministic Nested Word Automata.- On Embeddability of Unit Disk Graphs onto Straight Lines.-On the Decision Tree Complexity of Threshold Functions.- Randomized and Symmetric Catalytic Computation.- On the Parameterized Complexity of the Expected Coverage Problem.- Computational Hardness of Multidimensional Subtraction Games.- Parameterized Complexity of Fair Feedback Vertex Set Problem.- The Power of Leibniz-like Functions as Oracles.- Optimal Skeleton Huffman Trees Revisited.- The Subtrace Order and Counting First-Order Logic.- Speedable left-c.e. Numbers.- The Complexity of Controlling Condorcet, Fallback, and k-Veto Elections by Replacing Candidates or Voters.- On the Transformation of LL(k)-linear Grammars to LL(1)-linear.- On Computing the Hamiltonian Index of Graphs.- A Lower Bound for the Query Phase of Contraction Hierarchies and Hub Labels.- Kernelization of Arc Disjoint Cycle Packing in $\alpha$-bounded Digraphs.- On Subquadratic Derivational Complexity of Semi-Thue Systems.- The Untold Story of SBP.- Weighted Rooted Trees: Fat or Tall.- Groupoid Action and Rearrangement Problem of Bicolor Arrays by Prefix Reversals.