# 切片的投影公式　`prop.slice-shriek-projection`
命题：$j_{X!}(M \otimes j_{X}^{-1}N) = j_{X!}M \otimes N$
layer 20 · 命题 · 拓扑斯 · 范畴论
[在星图里打开](../#n=prop.slice-shriek-projection)　·　[节点索引](../index.md)

设 $\mathcal{T}$ 是拓扑斯、$X \in \mathcal{T}$、$M, N$ 是阿贝尔群层。则
> 陈述续见 [nodes/prop.slice-shriek-projection.2.md](./prop.slice-shriek-projection.2.md)


## 为什么成立（入边，证明在 proofs/）
- …另有入边，续页见 [nodes/prop.slice-shriek-projection.3.md](./prop.slice-shriek-projection.3.md)

refs: Le Stum, An introduction to condensed mathematics, Exercise 7.61

> 说明见 `notes/prop.slice-shriek-projection.md`

引用：`prop.slice-shriek-projection`（内容 v0.9.0）· 条款见 [LICENSE.txt](../LICENSE.txt)