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math.AG1998
The Algebraic Closure of the Power Series Field in Positive Characteristic
Kiran S. Kedlaya
We answer a question of Abhyankar by constructing an algebraic closure of the field of power series over a field of positive characteristic, using "generalized power series". (The…
math.CO1998
Another Combinatorial Determinant
Kiran S. Kedlaya
We present a variation and generalization of a determinant evaluation of Wilf (math.CO/9809120). His result concerns a matrix whose entries are the coefficients of powers of a give…