TY - JOUR
T1 - Torsion points of elliptic curves over large algebraic extensions of finitely generated fields
AU - Geyer, Wulf Dieter
AU - Jarden, Moshe
PY - 1978/9
Y1 - 1978/9
N2 - The following Theorem is proved:Let K be a finitely generated field over its prime field. Then, for almost all e-tuples (σ)=(σ 1, ..., σ e)of elements of the abstract Galois group G(K)of K we have: (a) If e=1, then E tor(K(σ))is infinite. Morover, there exist infinitely many primes l such that E(K(σ))contains points of order l. (b) If e≧2, then E tor(K(σ))is finite. (c) If e≧1, then for every prime l, the group E(K(σ))contains only finitely many points of an l-power order. Here K(σ) is the fixed field in the algebraic closure K of K, of σ 1, ..., σ e, and "almost all" is meant in the sense of the Haar measure of G(K).
AB - The following Theorem is proved:Let K be a finitely generated field over its prime field. Then, for almost all e-tuples (σ)=(σ 1, ..., σ e)of elements of the abstract Galois group G(K)of K we have: (a) If e=1, then E tor(K(σ))is infinite. Morover, there exist infinitely many primes l such that E(K(σ))contains points of order l. (b) If e≧2, then E tor(K(σ))is finite. (c) If e≧1, then for every prime l, the group E(K(σ))contains only finitely many points of an l-power order. Here K(σ) is the fixed field in the algebraic closure K of K, of σ 1, ..., σ e, and "almost all" is meant in the sense of the Haar measure of G(K).
UR - http://www.scopus.com/inward/record.url?scp=51249187068&partnerID=8YFLogxK
U2 - 10.1007/BF02761495
DO - 10.1007/BF02761495
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AN - SCOPUS:51249187068
SN - 0021-2172
VL - 31
SP - 257
EP - 297
JO - Israel Journal of Mathematics
JF - Israel Journal of Mathematics
IS - 3-4
ER -