| John Franks |  | 
              
                | Area Preserving Homeomorphisms of Open 
Surfaces of Genus Zero | 1 | 
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                | Dan Abramovich and José Felipe Voloch |  | 
              
                | Lang's Conjectures, Fibered Powers, and Uniformity | 20 | 
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                | Yorck Sommerhäuser |  | 
              
                | Deformed Enveloping Algebras | 35 | 
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                | 
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                | Doron Zeilberger |  | 
              
                | Proof of the Refined Alternating Sign Matrix Conjecture | 59 | 
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                | Rodrigo P. Gomez |  | 
              
                | An Integrable Flow  on a Family of Hilbert Grassmannians | 69 | 
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                | Lindsay N. Childs |  | 
              
                | Hopf Galois Structures on Degree p2 Cyclic Extensions of Local Fields | 86 | 
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                | Rogier Brussee |  | 
              
                | The  Canonical Class and the  C∞ Properties of Kähler Surfaces | 103 | 
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