Volume 59, Number 1, February 2012
Martin Otto:
Highly acyclic groups, hypergraph covers, and the guarded fragment.
5
Volume 59, Number 2, April 2012
Vijay V. Vazirani:
The notion of a rational convex program, and an algorithm for the arrow-debreu Nash bargaining game.
7
Volume 59, Number 3, June 2012
Volume 59, Number 4, August 2012
Yijia Chen,
Jörg Flum:
From Almost Optimal Algorithms to Logics for Complexity Classes via Listings and a Halting Problem.
17
Ke Yi:
Dynamic Indexability and the Optimality of B-Trees.
21
Volume 59, Number 5, October 2012
Martin Grohe:
Fixed-point definability and polynomial time on graphs with excluded minors.
27
Volume 59, Number 6, December 2012
Special issue text supplied by Joanne Pello