ScalingStacks

[004B]

Lemma 3.2.12.

Given \(\mathcal C\in \mathrm{CAlg}(\mathrm{Pr}^{\mathrm{L},\mathrm{cp}})\) and \(A \in \mathrm{Alg}(\mathcal C)\), the following hold:

  1. The \(\infty\)-category \(\mathrm{RMod}_A(\mathcal C)\) of right \(A\)-modules (see subsection A.9.1) is in \(\mathrm{Pr}^{\mathrm{L},\mathrm{cp}}\).

  2. The action functor \(\mathcal C\otimes \mathrm{RMod}_A(\mathcal C) \rightarrow\mathrm{RMod}_A(\mathcal C)\) is in \(\mathrm{Pr}^{\mathrm{L},\mathrm{cp}}\), thus \(\mathrm{RMod}_A(\mathcal C) \in \mathrm{Mod}_{\mathcal C}(\mathrm{Pr}^{\mathrm{L},\mathrm{cp}})\).

  3. If \(S\) is a set of compact projective generators of \(\mathcal C\), then the free modules \(\{c \otimes A_A\}_{c \in S}\) are compact projective generators of \(\mathrm{RMod}_A(\mathcal C)\).

  4. Furthermore, if \(\mathcal C\in \mathrm{CAlg}(\mathrm{Pr}^{\mathrm{L},\mathrm{cp}})\), then \(\mathrm{Mod}_A(\mathcal C)\) together with its symmetric monoidal relative tensor product is in \(\mathrm{CAlg}(\mathrm{Pr}^{\mathrm{L},\mathrm{cp}})\).

Given \(\mathcal C\in \mathrm{CAlg}(\mathrm{Pr}^{\mathrm{L},\mathrm{c}})\) and \(A \in \mathrm{Alg}(\mathcal C)\), the following hold:

  1. The \(\infty\)-category \(\mathrm{RMod}_A(\mathcal C)\) of right \(A\)-modules (see subsection A.9.1) is in \(\mathrm{Pr}^{\mathrm{L},\mathrm{c}}\).

  2. The action functor \(\mathcal C\otimes \mathrm{RMod}_A(\mathcal C) \rightarrow\mathrm{RMod}_A(\mathcal C)\) is in \(\mathrm{Pr}^{\mathrm{L},\mathrm{c}}\), thus \(\mathrm{RMod}_A(\mathcal C) \in \mathrm{Mod}_{\mathcal C}(\mathrm{Pr}^{\mathrm{L},\mathrm{c}})\).

  3. If \(S\) is a set of compact generators of \(\mathcal C\), then the free modules \(\{c \otimes A_A\}_{c \in S}\) are compact generators for \(\mathrm{RMod}_A(\mathcal C)\).

  4. Furthermore, if \(A \in \mathrm{CAlg}(\mathcal C)\), then \(\mathrm{Mod}_A(\mathcal C)\) together with its symmetric monoidal relative tensor product is in \(\mathrm{CAlg}(\mathrm{Pr}^{\mathrm{L},\mathrm{c}})\).

Original mathematics by the credited authors. Source collection and HTML conversion remain in progress.

Yu Leon Liu, Aaron Mazel-Gee, David Reutter, Catharina Stroppel, Paul Wedrich

Original source: arXiv:2401.02956v2

Original source · 2401.02956v2