14,713 research outputs found

    Nicodemus: A Figure of Ambiguity in a Gospel of Certainty

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    John 3:14-2

    Paul: An Introduction to His Thought

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    Reviewed Book: Barrett, C K. (Charles Kingsley). Paul: An Introduction to His Thought. London: Geoffrey Chapman; Louisville, Ky: Westminster/John Knox Pr, 1994. Outstanding Christian thinkers

    Global W2,pW^{2,p} estimates for solutions to the linearized Monge--Amp\`ere equations

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    In this paper, we establish global W2,pW^{2,p} estimates for solutions to the linearized Monge-Amp\`ere equations under natural assumptions on the domain, Monge-Amp\`ere measures and boundary data. Our estimates are affine invariant analogues of the global W2,pW^{2,p} estimates of Winter for fully nonlinear, uniformly elliptic equations, and also linearized counterparts of Savin's global W2,pW^{2,p} estimates for the Monge-Amp\`ere equations.Comment: v2: presentation improve

    Stability and Hermitian-Einstein metrics for vector bundles on framed manifolds

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    We adapt the notions of stability of holomorphic vector bundles in the sense of Mumford-Takemoto and Hermitian-Einstein metrics in holomorphic vector bundles for canonically polarized framed manifolds, i.e. compact complex manifolds X together with a smooth divisor D such that K_X \otimes [D] is ample. It turns out that the degree of a torsion-free coherent sheaf on X with respect to the polarization K_X \otimes [D] coincides with the degree with respect to the complete K\"ahler-Einstein metric g_{X \setminus D} on X \setminus D. For stable holomorphic vector bundles, we prove the existence of a Hermitian-Einstein metric with respect to g_{X \setminus D} and also the uniqueness in an adapted sense.Comment: 21 pages, International Journal of Mathematics (to appear

    N=2 Topological Yang-Mills Theory on Compact K\"{a}hler Surfaces

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    We study a topological Yang-Mills theory with N=2N=2 fermionic symmetry. Our formalism is a field theoretical interpretation of the Donaldson polynomial invariants on compact K\"{a}hler surfaces. We also study an analogous theory on compact oriented Riemann surfaces and briefly discuss a possible application of the Witten's non-Abelian localization formula to the problems in the case of compact K\"{a}hler surfaces.Comment: ESENAT-93-01 & YUMS-93-10, 34pages: [Final Version] to appear in Comm. Math. Phy

    The ADHM Construction of Instantons on Noncommutative Spaces

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    We present an account of the ADHM construction of instantons on Euclidean space-time R4\mathbb{R}^4 from the point of view of noncommutative geometry. We recall the main ingredients of the classical construction in a coordinate algebra format, which we then deform using a cocycle twisting procedure to obtain a method for constructing families of instantons on noncommutative space-time, parameterised by solutions to an appropriate set of ADHM equations. We illustrate the noncommutative construction in two special cases: the Moyal-Groenewold plane R4\mathbb{R}^4_\hbar and the Connes-Landi plane Rθ4\mathbb{R}^4_\theta.Comment: Latex, 40 page
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