Articles






Characteristic $p$ methods in characteristic zero via ultraproducts, to appear in "Recent Developments in Commutative Algebra", Editors: M. Fontana, S. Kabbaj, B. Olberding and I. Swanson, Springer(2009).
      
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Constructible invariants, J. Algebra 304 (2006), 1059-1089.
      
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M. Aschenbrenner and H. Schoutens, Lefschetz extensions, tight  closure, and big Cohen-Macaulay algebras, will appear in Israel Journal of Math.
      
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Bounds in polynomial rings over Artinian local rings, Monatshefte Math. 150 (2007), 249-261.
      
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A local flatness criterion for complete modules,  Comm. Algebra 35 (2007), 289-311.
      
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Asymptotical homological conjectures in mixed characteristic, Pacific Journal of Math 230 (2007), 427-468.
      
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Absolute bounds on the number of generators of Cohen-Macaulay ideals of height two, Bull. BMS 13 (2006), 719-732.
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Pure subrings of regular rings are pseudo-rationalTrans. Amer. Math. Soc. 360 (2008), 609-627.
      
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Log-terminal Singularities and Vanishing Theorems via non-standard tight closure, J. of Alg. Geom. 14 (2005) 357-390.
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On the vanishing of Tor for the absolute integral closure,  J. Algebra 275 (2004), 567-574.
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Canonical big Cohen-Macaulay algebras and rational singularities, Illinois J. Math. 41 (2004), 131-150.
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Lefschetz Principle applied to symbolic powers, J. of Algebra and its Appl. 2 (2003), 177-187.
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Non-standard tight closure for affine $\mathbb C$-algebras,  Manu. Math., 111 (2003), 379-412.
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Projective dimension and the singular locus, Comm. Algebra 31 (2003), 217-239.
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Mixed characteristic homological theorems in low degrees,  Comp. Rend. Ac. Sci. 336 (2003), 463-466.
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Number of generators of a Cohen-Macaulay ideal, J. Algebra 259 (2003), 235-242.
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Computing the minimal number of equations defining an affine curve ideal-theoretically, J. Pure Applied Alg. 177 (2003), 95-101.
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A non-standard proof of the Briancon-Skoda Theorem, Proc. Amer. Math. Soc. 131 (2003), 103-112.
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J. Denef and H. Schoutens, On the decidability of the existential theory of $F_p[[t]]$, Valuation Theory and its Applications, Vol. 2 (Saskatoon, 1999), 43-60, Fields Inst. Commun., 33, AMS, 2003.
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T.S. Gardener and H. Schoutens, Rigid subanalytic sets, Valuation Theory and its Applications, Vol. 1 (Saskatoon, 1999), 141-150, Fields Inst. Commun., 32, AMS, 2002.
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Recursive sequences and flatness, Rocky Mountain J. of Math. 31, (2001), pp. 1423-1427.
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Uniform bounds in Algebraic Geometry and Commutative Algebra, in "Connections between Model Theory and Algebraic and Analytic Geometry" (ed. A. Macintyre), Quaderni di Mathematica 6, (2000), pp. 43-93.
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T.S. Gardener and H. Schoutens, Flattening and subanalytic sets in rigid analytic geometry, Proc. of Lond. Math. Soc. 83 (2001), 681-707.
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Artin approximation via the model theory of Cohen-Macaulay rings, Logic Colloquium '98: proceedings of the 1998 ASL Meeting held in Prague, Czech Republic (S. Buss, P. Hajek and P. Pudlak), Lect. Notes in Logic, 13 (2000), pp. 409-425.
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Bounds in cohomology, Israel J. of Math. 116 (2000), 125-169.
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Embedded resolution of singularities in rigid analytic geometry, Ann. Fac. Sci. Toulouse VIII (1999), 297-330.
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Existentially closed models of the theory of Artinian local rings, J. Symb. Logic, 64 (1999), 825-845.
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Rigid analytic flatificators, Quart. J. Math. Oxford Ser. (2) 50 (1999), 321-353.
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The closure of rigid semianalytic sets, J. Algebra. 198 (1997), 120-134.
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Blowing up in rigid analytic geometry, Bull. Soc. Math. Belg. 2 (1994), 401-419.

Rigid subanalytic sets in the plane, J. Algebra 170 (1994), no. 1, 266-276.

Rigid subanalytic sets, Compositio Math. 94 (1994), 269-295.

Uniformization of rigid subanalytic sets, Compositio Math. 94 (1994), 227-245.

Approximation properties for some non-noetherian local rings, Pacific J. Math. 131 (1988), 331-359.