Commutative Diagram (thumbnail)
Description:
Commutative diagram: the map φ is surjective by the choice of S and is also injective by the definition of ESx. (Courtesy of Oron Propp. Used with permission.)
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Commutative Diagram (thumbnail)
Alt text:
A commutative diagram consisting of 4-row 3-column grids.
Caption:
Commutative diagram: the map φ is surjective by the choice of S and is also injective by the definition of ESx. (Courtesy of Oron Propp. Used with permission.)
![A commutative diagram consisting of 4-row 3-column grids.](/courses/18-786-number-theory-ii-class-field-theory-spring-2016/ec1e90899cb343f306dd822e7d547f61_18-786s16-th.jpg)
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