Download e-book for kindle: Algebraic cycles, sheaves, shtukas, and moduli by Piotr Pragacz

By Piotr Pragacz

ISBN-10: 3764385367

ISBN-13: 9783764385361

ISBN-10: 3764385375

ISBN-13: 9783764385378

The articles during this quantity are committed to:

- moduli of coherent sheaves;

- valuable bundles and sheaves and their moduli;

- new insights into Geometric Invariant Theory;

- stacks of shtukas and their compactifications;

- algebraic cycles vs. commutative algebra;

- Thom polynomials of singularities;

- 0 schemes of sections of vector bundles.

The major function is to offer "friendly" introductions to the above issues via a chain of complete texts ranging from a truly undemanding point and finishing with a dialogue of present examine. In those texts, the reader will locate classical effects and strategies in addition to new ones. The e-book is addressed to researchers and graduate scholars in algebraic geometry, algebraic topology and singularity thought. many of the fabric offered within the quantity has no longer seemed in books before.

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Extra resources for Algebraic cycles, sheaves, shtukas, and moduli

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297 (1993), 85–102. S. Fibr´es de t’Hooft sp´ eciaux et applications. Enumerative geometry and Classical algebraic geometry, Progr. in Math. 24 (1982). , Lehn, M. The Geometry of Moduli Spaces of Sheaves. Aspect of Math. E31, Vieweg (1997). [14] Maruyama, M. Moduli of stable sheaves I. J. Math. Kyoto Univ. 17 (1977), 91–126. [15] Maruyama, M. Moduli of stable sheaves II. J. Math. Kyoto Univ. 18 (1978), 577–614. , Trautmann, G. Limits of instantons. Intern. Journ. of Math. 3 (1992), 213–276. , Spindler, H.

Fr/~drezet Algebraic Cycles, Sheaves, Shtukas, and Moduli Trends in Mathematics, 45–68 c 2007 Birkh¨ auser Verlag Basel/Switzerland Lectures on Principal Bundles over Projective Varieties Tom´as L. G´omez Abstract. Lectures given in the Mini-School on Moduli Spaces at the Banach center (Warsaw) 26–30 April 2005. In these notes we will always work with schemes over the field of complex numbers C. Let X be a scheme. A vector bundle of rank r on X is a scheme with a surjective morphism p : V → X and an equivalence class of linear atlases.

In this range t = 12 is the only value such 3 that P(W )s (t) = P(W )ss (t). For all t such that 10 < t < 12 we obtain the same 1 geometric quotient M1 , and for t such that 2 < t < 1 the geometric quotient M2 . These two quotients are smooth projective varieties. According to [2] we have an isomorphism M (6, −3, 8) M1 . To obtain it we associate to a morphism its cokernel. Exotic Fine Moduli Spaces of Coherent Sheaves 31 The other moduli space M2 is also a fine moduli space of sheaves. The corresponding open set of sheaves consists of the cokernels of the morphisms parametrized by M2 .

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Algebraic cycles, sheaves, shtukas, and moduli by Piotr Pragacz

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