Earlier papers of David Harbater


Deformation theory and the fundamental group in algebraic geometry.  
    Ph.D. thesis, M.I.T., May 1978.
 
Deformation theory and the tame fundamental group.  Transactions
    of the AMS, vol. 262 (1980), pp. 399-415.
 
Moduli of p-covers of curves, Communications in Algebra, 8 (12)
    (1980), pp. 1095-1122.
 
Convergent arithmetic power series, Amer. J. Math., 106 (1984),
    no. 4, pp. 801-846.
 
Ordinary and supersingular covers in characteristic p , Pacific
    J. Math., 113 (1984) no. 2, pp. 349-363.
 
Mock covers and Galois extensions, Journal of Algebra, 91 (1984),
    pp. 281-293.
 
Algebraic rings of arithmetic power series, Journal of Algebra,
    91 (1984), pp. 294-319.
 
Hurwitz families and arithmetic Galois groups (with K. Coombes),
    Duke Mathematical Journal, 52 (1985), pp. 821-839.
 
Galois coverings of the arithmetic line, in Number Theory:  New
    York, 1984-85.  Springer LNM, vol. 1240 (1987), pp. 165-195.
 
Galois covers of an arithmetic surface, American Journal of
    Mathematics, 110 (1988), no. 5, pp. 849-885.
 
Global approximation in dimension two (with J. Denef), Journal of
    Algebra, 129 (1990), pp. 159-193.
 
Potential theory over local and global fields:  I, Journal of
    Algebra, 148 (1992), 337-383.
 
Potential theory over local and global fields:  II,  Journal of
    Algebra, 148 (1992), 384-432.
 
Strong Bertini theorems, (with S. Diaz), Transactions of the AMS, 
    324 (1991), 73-86.
 
Every curve is a Hurwitz space (with S. Diaz and R. Donagi), Duke
    Mathematical Journal, 59 (1989), pp. 737-746.
 
On purity of inertia, Proceedings of the AMS, 112 (1991), 311-319.
 
Arithmetic discriminants and horizontal intersections,
    Mathematische Annalen, 291 (1991), 705-724.

Formal patching and adding branch points, American Journal of Mathematics, 
   115 (1993), 487-508.

Abhyankar's conjecture on Galois groups over curves, Inventiones Math., 
   117 (1994), 1-25.
 
Galois groups with prescribed ramification, in "Proceedings of a      
   Conference on Arithmetic Geometry" (Arizona State Univ., 1993), AMS 
   Contemporary Mathematics Series, vol. 174, 1994, pp. 35-60.
   pdf file
 
Fundamental groups and embedding problems in characteristic p, in    
   "Recent Developments in the Inverse Galois Problem" (M. Fried, et al,  
   eds.), AMS Contemporary Mathematics Series, vol. 186, 1995, pp.353-369.
   pdf file

Fundamental groups of curves in characteristic p, in "Proceedings of the    
   International Congress of Mathematicians" (Zurich, 1994), Birkhauser,
   1995, pp.656-666.
   pdf file

Approximating Galois orbits of dessins (with L. Schneps), in "Geometric
   Galois Actions", Volume I, London Mathematical Society Lecture Note
   series, vol. 242, Cambridge University Press, 1997, pp.205-230.
   dvi file

Fields of definition of p-adic covers (with P. Debes), Crelle's Journal,
   vol. 498 (1998), 223-236.
   pdf file

Patching and thickening problems (with K. Stevenson), J. Alg., vol. 212
   (1999), 272-304.
   dvi file 

Embedding problems and adding branch points, in "Aspects of Galois
   Theory", London Mathematical Society Lecture Note series, vol. 256,
   Cambridge University Press, 1999, pp.119-143.
   dvi file
   

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