Daniel Krashen - Research
Publications
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Applications of patching to quadratic forms and central simple algebras,
with D. Harbater and J. Hartmann.
Inventiones Mathematica, SpringerLink Date April 21, 2009.
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Corestrictions of algebras and splitting fields,
To appear in Transactions of the American Mathematical Society.
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Zero cycles on homogeneous varieties,
To appear in Advances in Mathematics.
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Pointed trees of projective spaces
(with Linda Chen and Angela Gibney),
Journal of Algebraic GeometryVolume 18, Number 3, July 2009.
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Index reduction for Brauer classes via stable sheaves
(with Max Lieblich, appendix by Bhargav Bhatt).
International Math. Research Notices, 2008: rnn010-31.
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Birational maps between generalized Severi-Brauer varieties,
To appear in the Journal of Pure and Applied Algebra.
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Motives of unitary and orthogonal homogeneous varieties,
Journal of Algebra, Vol 318/1 pp 135-139, 2007.
- Severi-Brauer Varieties and Symmetric Powers
(with David Saltman),
Invariant Theory and Algebraic Transformation Groups, Encyclopaedia of Mathematical Sciences, Vol. 132, Springer-Verlag 2004 (refereed).
- Severi-Brauer varieties of semidirect product algebras,
Documenta Mathematica, vol 8 (2003), pp 527-546.
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Relative Brauer groups of genus $1$ curves
(with Mirela Ciperiani),
submitted for publication
- Appendix to Period and index in the Brauer group of an arithmetic surface (by Max Lieblich).
Preprints
Lecture Notes
- Local global principles for field patching and applications to quadratic forms and division algebras (with David Harbater and Julia Hartmann),
Other Manuscripts
- Birational isomorphisms between Severi-Brauer varieties,
PhD Thesis, University of Texas at Austin.
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Moduli of \'etale subalgebras in a central simple algebra,
(much of this material has been subsumed in the above paper ``Zero cycles on homogeneous varieties'').
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Quadratic forms and the period-index problem
This note describes some elementary consequences of some deep results in the theory of quadratic forms to the period-index problem for cohomology classes



