1. Introduction to the Goldberg Festschrift

   • E. N. Glass
   • D. C. Robinson

   Editorial 30 August 2011 Pages: 3239 - 3241

2. Reminiscences about Josh Goldberg and general relativity

   • E. T. Newman

   Review Article 06 August 2011 Pages: 3243 - 3245

3. General relativity at Syracuse in the mid-fifties

   • Allen I. Janis

   Review Article 08 August 2011 Pages: 3247 - 3251

4. Shear free solutions in general relativity theory

   • George F. R. Ellis

   Review Article 10 August 2011 Pages: 3253 - 3268

5. Worldtube conservation laws for the null-timelike evolution problem

   • Jeffrey Winicour

   Research Article 09 August 2011 Pages: 3269 - 3288

6. Josh Goldberg and the physical reality of gravitational waves

   • Peter R. Saulson

   Review Article 10 August 2011 Pages: 3289 - 3299

7. Electromagnetic sources distributed on shells in a Schwarzschild background

   • N. Gürlebeck
   • J. Bičák
   • A. C. Gutiérrez-Piñeres

   Research Article 18 August 2011 Pages: 3301 - 3312

8. Affine gravity, Palatini formalism and charges

   • Joseph Katz
   • Gideon I. Livshits

   Review Article 24 September 2011 Pages: 3313 - 3336

9. Nordström’s scalar theory of gravity and the equivalence principle

   • Nathalie Deruelle

   Research Article 07 August 2011 Pages: 3337 - 3354

10. On cosmological mass with positive Λ

    • Roger Penrose

    Research Article Open access 19 August 2011 Pages: 3355 - 3366

11. Some adventures in the search for a modified gravity explanation of cosmic acceleration

    • Mark Trodden

    Review Article 18 August 2011 Pages: 3367 - 3379

12. Ricci flow for homogeneous compact models of the universe

    • I. Ozsváth
    • E. L. Schücking
    • C. C. Lin

    Research Article 25 August 2011 Pages: 3381 - 3398

13. Conformal and projective structures in general relativity

    • John Stachel

    Research Article 17 August 2011 Pages: 3399 - 3409

14. Double null hamiltonian dynamics and the gravitational degrees of freedom

    • J. A. Vickers

    Research Article 23 August 2011 Pages: 3411 - 3428

15. Canonical quantization of spherically symmetric dust collapse

    • Cenalo Vaz
    • Louis Witten

    Research Article 15 August 2011 Pages: 3429 - 3449

16. Two-site quantum random walk

    • Stanley P. Gudder
    • Rafael D. Sorkin

    Research Article 21 August 2011 Pages: 3451 - 3475

17. Noncommutative geometry of phase space

    • Maja Burić
    • John Madore

    Research Article 07 September 2011 Pages: 3477 - 3495

18. The IR stability of de Sitter QFT: physical initial conditions

    • Donald Marolf
    • Ian A. Morrison

    Research Article 09 August 2011 Pages: 3497 - 3530

19. Quantum geons and noncommutative spacetimes

    • A. P. Balachandran
    • A. Ibort
    • M. Martone

    Research Article 07 September 2011 Pages: 3531 - 3567

20. Quantum scalar field in quantum gravity: the propagator and Lorentz invariance in the spherically symmetric case

    • Rodolfo Gambini
    • Jorge Pullin
    • Saeed Rastgoo

    Research Article 23 August 2011 Pages: 3569 - 3592

21. Symplectic Dirac operators and \({Mp^{\rm c}}\) -structures

    • Michel Cahen
    • Simone Gutt
    • John Rawnsley

    Research Article 18 August 2011 Pages: 3593 - 3617

22. Probability of inflation in loop quantum cosmology

    • Abhay Ashtekar
    • David Sloan

    Research Article 25 August 2011 Pages: 3619 - 3655

23. The reasonable effectiveness of mathematics in the natural sciences

    • Alex Harvey

    Research Article 10 August 2011 Pages: 3657 - 3664

24. Why physics needs mathematics

    • Fritz Rohrlich

    Review Article 28 September 2011 Pages: 3665 - 3669

25. Classical paradoxes of locality and their possible quantum resolutions in deformed special relativity

    • Lee Smolin

    Research Article 19 August 2011 Pages: 3671 - 3691

26. Motion of a rigidly rotating circle in terms of Minkowski geometry

    • Stanisław L. Bażański

    Research Article 20 August 2011 Pages: 3693 - 3703