Editor's foreword
Dedicated to our colleague and friend Michael Machtey
New hash functions and their use in authentication and set equality
A time-luck tradeoff in relativized cryptography
On time versus space II
Semantics of probabilistic programs
A time-space tradeoff for sorting on non-oblivious machines
On uniform circuit complexity
Number of quantifiers is better than number of tape cells
Explicit constructions of linear-sized superconcentrators
Division in idealized unit cost RAMs
Remarks on Recursion versus Diagonalization and Exponentially Difficult Problems
Computational Complexity of Algebraic Functions
Author index for volume 22