Sur la préservation de la cohérence par image inverse extraordinaire par une immersion fermée
Abstract: Let $\mathcal{V}$ be a complete discrete valuation ring of unequal characteristic with perfect residue field, $u\colon \mathcal{Z} \hookrightarrow \mathfrak{X}$ be a closed immersion of smooth, quasi-compact, separated formal schemes over $\mathcal{V}$, $T$ be a divisor of $X$ such that $U:= T \cap Z$ is a divisor of $Z$, $\mathfrak{D}$ a strict normal crossing divisor of $\mathfrak{X}$ such that $u {-1} (\mathfrak{D})$ is a strict normal crossing divisor of $\mathcal{Z}$. We pose $\mathfrak{X} {\sharp}:= (\mathfrak{X}, \mathfrak{D})$, $\mathcal{Z} {\sharp}:= (\mathcal{Z}, u {-1}\mathfrak{D})$ and $u {\sharp}\colon \mathcal{Z} {\sharp} \hookrightarrow \mathfrak{X} {\sharp}$ the exact closed immersion of smooth logarithmic formal schemes over $\V$. Let $\mathcal{E} {(\bullet)} \in \smash{\underrightarrow{LD}} {\mathrm{b}}_{\mathbb{Q}, \mathrm{coh}} (\smash{\hat{\mathcal{D}}}{\mathfrak{X} {\sharp}} {(\bullet)} (T))$ and $\mathcal{E} := \underrightarrow{\lim} ~ (\mathcal{E} {(\bullet)}) $ the corresponding objet of $D {\mathrm{b}}{\mathrm{coh}}(\smash{\mathcal{D}} \dag_{\mathfrak{X} {\sharp}}(\hdag T){\mathbb{Q}})$. In this paper, we study sufficient conditions on $\mathcal{E}$ so that if $u {\sharp !} (\mathcal{E}) \in D {\mathrm{b}}{\mathrm{coh}}(\smash{\mathcal{D}} \dag_{\mathcal{Z} {\sharp}}(\hdag U){\mathbb{Q}})$ then $u {\sharp (\bullet) !} (\mathcal{E} {(\bullet)}) \in \smash{\underrightarrow{LD}} {\mathrm{b}}{\mathbb{Q}, \mathrm{coh}} (\smash{\hat{\mathcal{D}}}_{\mathcal{Z} {\sharp}} {(\bullet)} (U))$.
Paper Prompts
Sign up for free to create and run prompts on this paper using GPT-5.
Top Community Prompts
Collections
Sign up for free to add this paper to one or more collections.