Towers of function fields;
rational points;
finite fields;
hypergeometric functions;
Deuring's polynomial;
ALGEBRAIC-GEOMETRIC CODES;
FINITE-FIELDS;
TAME TOWERS;
DIFFERENTIAL-EQUATIONS;
ELLIPTIC-CURVES;
CONSTRUCTION;
INVARIANTS;
ALGORITHM;
SEQUENCE;
D O I:
10.1142/S1793042110003344
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
We define two asymptotically optimal towers over quadratic fields, and give the explicit descriptions of the ramification loci and the sets of places splitting completely, which relate to the elliptic modular curves X(0)(4(n)) and X(0)(3(n)), respectively. Moreover, in the last section, we determine completely the modularity of a tower given by Maharaj and Wulftange in [18].