Mathematical Research Letters

Volume 7, Issue 1, January 2000

A Sharp Estimate on the Norm of the Martingale Transform
Janine Wittwer
Math. Research Letters pp. 1-12
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Perverse Sheaves on affine Grassmannians and Langlands Duality
Ivan Mirkovi\'c and Kari Vilonen
Math. Research Letters pp. 13-24
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Carathéodory-Fejér interpolation on polydisks
Jörg Eschmeier, Linda Patton and Mihai Putinar
Math. Research Letters pp. 25-34
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On the Unfolding of Folded Symplectic Structures
Ana Cannas da Silva, Victor Guillemin and Christopher Woodward
Math. Research Letters pp. 35-53
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Gerbes of chiral differential operators
Vassily Gorbounov, Fyodor Malikov, and Vadim Schechtman
Math. Research Letters pp. 55-66
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Varieties without extra automorphisms~I: curves
Bjorn Poonen
Math. Research Letters pp. 67-76
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Varieties without extra automorphisms II: hyperelliptic curves
Bjorn Poonen
Math. Research Letters pp. 77-82
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A Maximal Operator and a Covering Lemma on Non-Compact Symmetric Spaces
Alexandru D. Ionescu
Math. Research Letters pp. 83-93
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On level-lowering for mod 2 representations
Kevin Buzzard
Math. Research Letters pp. 96-110
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Tautological formal Frobenius manifold structures on a Frobenius algebra
Jian Zhou
Math. Research Letters pp. 111-121
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Hyperelliptic jacobians without complex multiplication
Yuri G. Zarhin
Math. Research Letters pp. 123-132
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Harmonic Maps to Teichmüller Space
Georgios Daskalopoulos, Ludmil Katzarkov, and Richard Wentworth
Math. Research Letters pp. 133-146
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