## Commutative Diagram

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

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*E*. (Courtesy of Oron Propp. Used with permission.)_{S}^{x}## Course Info

##### Learning Resource Types

*notes*Lecture Notes

*assignment*Problem Sets