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Old 2019-02-27, 01:07   #3
bbb120
 
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Feb 2019
China

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https://members.loria.fr/PZimmermann...s/ecm/go.magma
I found it,
but why do no use A and B instead of sigma (where y^2=x^3+A*x+B)?
Is sigma much more useful than A and B?
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