In
mathematics, an Eichler order, named after
Martin Eichler, is an
order of a
quaternion algebra
In mathematics, a quaternion algebra over a field ''F'' is a central simple algebra ''A'' over ''F''See Milies & Sehgal, An introduction to group rings, exercise 17, chapter 2. that has dimension 4 over ''F''. Every quaternion algebra becomes a ma ...
that is the intersection of two
maximal orders.
References
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{{Numtheory-stub
Number theory