Header menu link for other important links
X
Divisibility of class numbers of imaginary quadratic function fields by a fixed odd number
, S. Kotyada
Published in Indian Academy of Sciences
2013
Volume: 123
   
Issue: 1
Pages: 1 - 18
Abstract
In this paper we find a new lower bound on the number of imaginary quadratic extensions of the function field Fq (x) whose class groups have elements of a fixed odd order. More precisely, for q, a power of an odd prime, and g a fixed odd positive integer ≥ 3, we show that for every ∈ > 0, there are » qL(1/2+ 3/ 2(g+1) -∈) polynomials f ∈ Fq [x] with deg f = L, for which the class group of the quadratic extension Fq (x, √ f) has an element of order g. This sharpens the previous lower bound qL(12 +1 g) of Ram Murty. Our result is a function field analogue which is similar to a result of Soundararajan for number fields. © Indian Academy of Sciences.
About the journal
JournalProceedings of the Indian Academy of Sciences: Mathematical Sciences
PublisherIndian Academy of Sciences
ISSN02534142