Showing math.NTShow all
2 papers · 1 filter
math.NT2004
The L-functions of twisted Witt extensions
Chunlei Liu
The L-function of a non-degenerate twisted Witt extension is proved to be a polynomial. Its Newton polygon is proved to lie above the Hodge polygon of that extension. And the Newto…
math.NT2004
The -functions of Witt coverings
Chunlei Liu, Dasheng Wei
Results on -functions of Artin-Schreier coverings by Dwork, Bombieri and Adolphson-Sperber are generalized to -functions of Witt coverings.