Hyperelliptic jacobians without complex multiplication
نویسندگان
چکیده
منابع مشابه
Hyperelliptic Jacobians without Complex Multiplication
has only trivial endomorphisms over an algebraic closure of the ground field K if the Galois group Gal(f) of the polynomial f ∈ K[x] is “very big”. More precisely, if f is a polynomial of degree n ≥ 5 and Gal(f) is either the symmetric group Sn or the alternating group An then End(J(C)) = Z. Notice that it easily follows that the ring of K-endomorphisms of J(C) coincides with Z and the real pro...
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has only trivial endomorphisms over an algebraic closure of the ground field K if the Galois group Gal(f) of the polynomial f ∈ K[x] of even degree is “very big”. More precisely, if f is a polynomial of even degree n ≥ 10 and Gal(f) is either the symmetric group Sn or the alternating group An then End(J(C)) = Z. Notice that it is known [10] that in this case (and even for all integers n ≥ 5) ei...
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We construct and study two series of curves whose Jacobians admit complex multiplication. The curves arise as quotients of Galois coverings of the projective line with Galois group metacyclic groups Gq,3 of order 3q with q ≡ 1 mod 3 an odd prime, and Gm of order 2 . The complex multiplications arise as quotients of double coset algebras of the Galois groups of these coverings. We work out the C...
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ژورنال
عنوان ژورنال: Mathematical Research Letters
سال: 2000
ISSN: 1073-2780,1945-001X
DOI: 10.4310/mrl.2000.v7.n1.a11