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同种[Isogeny]
[2005-12-10]
iamet
发表在
∑〖数学〗
A rational homomorphism
defined over a field is called an isogeny when
. Two
groups
and
are then called isogenous if there exists a third group
and isogenies
and
.
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defined over a field is called an isogeny when 
. Two groups 
and 
are then called isogenous if there exists a third group 
and isogenies 
and 
.