Liu Hang

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Name Liu Hang
Member for 2 years
Seen Mar 31 at 22:43
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Location Amsterdam
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Interested in algebraic geometry and algebraic K-theory. Email:liuhang312 at gmail.com
Mar
13
revised Does split L-function imply split jacobian
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Mar
13
comment Does split L-function imply split jacobian
The reduction of jacobian can split at all places with good reduction, so the local L factor splits everywhere, this is what I mean by "the L-function splits", sorry for the confusing. So could we know if the jacobian of the curve split or not from the information of the L function of the curve. More specifically, look at the genus 4 curve $C:y^3=x^6+1$, the L-function of the curve splits in the sense above, and $C$ maps to $E:y^3=x^3+1$ and $E′:y^3=x^2+1$ , so the Jacobian of $C$ splits to $E×E′×F$, how could I know if $F$ splits or not?
Mar
13
comment Does split L-function imply split jacobian
Thanks, Francois. But what if I only know the L function splits (not necessarily into product of L-functions, this can happen according to the reference pointed out by Felipe).
Mar
13
revised Does split L-function imply split jacobian
added 541 characters in body
Mar
12
comment Does split L-function imply split jacobian
In my case, it is defined over Q or quadratic number field.
Mar
12
asked Does split L-function imply split jacobian