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Mar 13, 2021 at 22:41 comment added Zhen Lin I know the definition. The tripos-to-topos construction is how I'm convincing myself that this is equivalent to the obvious definition of "$\Sigma$-structure in $\textbf{Sh} (A)$".
Mar 13, 2021 at 18:51 comment added Andrej Bauer Are you familiar with triposes?
Mar 13, 2021 at 15:58 history asked Zhen Lin CC BY-SA 4.0