I. Information Theory -- 1 Two New Results for Identification for Sources -- 2 L-Identification for Uniformly Distributed Sources and the q-ary Identification Entropy of Second Order -- 3 Optimal Rate Region of Two-Hop Multiple Access Channel via Amplify-and-Forward Scheme -- 4 Strong Secrecy for Multiple Access Channels -- 5 Capacity Results for Arbitrarily Varying Wiretap Channels -- 6 On Oblivious Transfer Capacity -- 7 Achieving Net Feedback Gain in the Linear-Deterministic Butterfly Network with a Full-Duplex Relay -- 8 Uniformly Generating Origin Destination Tables -- 9 Identification via Quantum Channels -- 10 Classical-Quantum Arbitrarily Varying Wiretap Channel -- 11 Arbitrarily Varying and Compound Classical-Quantum Channels and a Note on Quantum Zero-Error Capacities -- 12 On the Value of Multiple Read/Write Streams for Data Compression -- 13 How to Read a Randomly Mixed Up Message -- 14 Multiple Objects: Error Exponents in Hypotheses Testing and Identification -- II. Combinatorics 15 Family Complexity and VC-Dimension -- 16 The Restricted Word Shadow Problem -- 17 Mixed Orthogonal Arrays, k-Dimensional M-Part Sperner Multi-families, and Full Multitransversals -- 18 Generic Algorithms for Factoring Strings -- 19 On Data Recovery in Distributed Databases -- 20 An Unstable Hypergraph Problem with a Unique Optimal Solution -- 21 Multiparty Communication Complexity of Vector-Valued and Sum-Type Functions -- 22 Threshold Functions for Distinct Parts: Revisiting Erd�os-Lehner -- 23 On Some Structural Properties of Star and Pancake Graphs -- III. Search Theory -- 24 Threshold and Majority Group Testing -- 25 Superimposed Codes and Threshold Group Testing -- 26 New Construction of Error-Tolerant Pooling Designs -- 27 Density-Based Group Testing -- 28 Group Testing with Multiple Mutually-Obscuring Positives -- 29 An Efficient Algorithm for Combinatorial Group Testing -- 30 Randomized Post-optimization for t-Restrictions -- 31 Search for Sparse Active Inputs: A Review -- 32 Search When the Lie Depends on the Target -- 33 A Heuristic Solution of a Cutting Problem Using Hypergraphs -- 34 Remarks on History and Presence of Game Tree Search and Research -- 35 Multiplied Complete Fix-Free Codes and Shiftings Regarding the 3/4-Conjecture -- Michael Bodewig 36 Creating Order and Ballot Sequences -- Obituaries and Personal Memories -- Abschied -- 38 Rudi -- 39 Gedenkworte f�ur Rudolf Ahlswede -- 40 In Memoriam Rudolf Ahlswede 1938 - 2010 -- 41 Rudolf Ahlswede 1938-2010 -- 42 Remembering Rudolf Ahlswede -- 43 Rudi Ahlswede -- 44 The Happy Connection between Rudi and Japanese Researchers -- 45 From Information Theory to Extremal Combinatorics: My Joint Works with Rudi Ahlswede -- 46 Mr. Schimanski and the Pragmatic Dean -- 47 Broken Pipes -- 48 Rudolf Ahlswede's Funny Character -- 49 Two Anecdotes of Rudolf Ahlswede -- Bibliography of Rudolf Ahlswede's Publications.

This volume is dedicated to the memory of Rudolf Ahlswede, who passed away in December 2010. The Festschrift contains 36 thoroughly refereed research papers from a memorial symposium, which took place in July 2011. The four macro-topics of this workshop: theory of games and strategic planning; combinatorial group testing and database mining; computational biology and string matching; information coding and spreading and patrolling on networks; provide a comprehensive picture of the vision Rudolf Ahlswede put forward of a broad and systematic theory of search.