Definition 15.104.1. A ring $A$ is called absolutely flat if every $A$-module is flat over $A$. A ring map $A \to B$ is weakly étale or absolutely flat if both $A \to B$ and $B \otimes _ A B \to B$ are flat.
Definition 15.104.1. A ring $A$ is called absolutely flat if every $A$-module is flat over $A$. A ring map $A \to B$ is weakly étale or absolutely flat if both $A \to B$ and $B \otimes _ A B \to B$ are flat.
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