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Journal of the ACM, Volume 51, 2004
Volume 51, Number 1, January 2004
- Phokion G. Kolaitis, Victor Vianu:

Foreword. 1 - Gerome Miklau, Dan Suciu

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Containment and equivalence for a fragment of XPath. 2-45 - Chung-Min Chen, Christine T. Cheng:

From discrepancy to declustering: Near-optimal multidimensional declustering strategies for range queries. 46-73 - Georg Gottlob

, Christoph Koch:
Monadic datalog and the expressive power of languages for Web information extraction. 74-113
Volume 51, Number 2, March 2004
- Ran Raz

:
Resolution lower bounds for the weak pigeonhole principle. 115-138 - Pankaj K. Agarwal, Eran Nevo, János Pach, Rom Pinchasi, Micha Sharir, Shakhar Smorodinsky

:
Lenses in arrangements of pseudo-circles and their applications. 139-186 - Johan Håstad

, Mats Näslund:
The security of all RSA and discrete log bits. 187-230 - Moni Naor, Omer Reingold:

Number-theoretic constructions of efficient pseudo-random functions. 231-262 - Jon M. Kleinberg, Christos H. Papadimitriou, Prabhakar Raghavan

:
Segmentation problems. 263-280 - Albert Atserias:

On sufficient conditions for unsatisfiability of random formulas. 281-311 - Georg Gottlob

, Phokion G. Kolaitis, Thomas Schwentick:
Existential second-order logic over graphs: Charting the tractability frontier. 312-362
Volume 51, Number 3, May 2004
- Jochen Alber, Michael R. Fellows

, Rolf Niedermeier:
Polynomial-time data reduction for dominating set. 363-384 - Daniel A. Spielman

, Shang-Hua Teng:
Smoothed analysis of algorithms: Why the simplex algorithm usually takes polynomial time. 385-463 - Peter Bürgisser, Martin Lotz:

Lower bounds on the bounded coefficient complexity of bilinear maps. 464-482 - Wojciech Plandowski:

Satisfiability of word equations with constants is in PSPACE. 483-496 - Ravi Kannan, Santosh S. Vempala, Adrian Vetta:

On clusterings: Good, bad and spectral. 497-515
Volume 51, Number 4, July 2004
- Luca Becchetti

, Stefano Leonardi:
Nonclairvoyant scheduling to minimize the total flow time on single and parallel machines. 517-539 - Dimitris Bertsimas, Santosh S. Vempala:

Solving convex programs by random walks. 540-556 - Ran Canetti, Oded Goldreich

, Shai Halevi:
The random oracle methodology, revisited. 557-594 - Scott Aaronson, Yaoyun Shi:

Quantum lower bounds for the collision and the element distinctness problems. 595-605 - Pankaj K. Agarwal, Sariel Har-Peled

, Kasturi R. Varadarajan:
Approximating extent measures of points. 606-635 - Jan M. Hochstein, Karsten Weihe:

Edge-disjoint routing in plane switch graphs in linear time. 636-670 - Mark Jerrum, Alistair Sinclair, Eric Vigoda:

A polynomial-time approximation algorithm for the permanent of a matrix with nonnegative entries. 671-697
Volume 51, Number 5, September 2004
- Vladlen Koltun:

Almost tight upper bounds for vertical decompositions in four dimensions. 699-730 - Valter Crescenzi, Giansalvatore Mecca:

Automatic information extraction from large websites. 731-779 - Shlomi Dolev

, Jennifer L. Welch:
Self-stabilizing clock synchronization in the presence of Byzantine faults. 780-799 - Robert C. Steinke, Gary J. Nutt:

A unified theory of shared memory consistency. 800-849
Volume 51, Number 6, November 2004
- Cynthia Dwork, Moni Naor, Amit Sahai:

Concurrent zero-knowledge. 851-898 - Oded Regev:

New lattice-based cryptographic constructions. 899-942 - David Kempe, Jon M. Kleinberg, Alan J. Demers:

Spatial gossip and resource location protocols. 943-967 - Camil Demetrescu, Giuseppe F. Italiano

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A new approach to dynamic all pairs shortest paths. 968-992 - Mikkel Thorup:

Compact oracles for reachability and approximate distances in planar digraphs. 993-1024 - Alan M. Frieze

, Ravi Kannan, Santosh S. Vempala:
Fast monte-carlo algorithms for finding low-rank approximations. 1025-1041

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