ScalingStacks

0NM8

Definition 5.18. An exact sequence of small κ\kappa-cocomplete stable ∞\infty-categories and κ\kappa-small colimit preserving functors

π’œ\textstyle{{\mathcal{A}}\ignorespaces\ignorespaces\ignorespaces\ignorespaces}f\scriptstyle{f}ℬ\textstyle{{\mathcal{B}}\ignorespaces\ignorespaces\ignorespaces\ignorespaces}g\scriptstyle{g}π’ž\textstyle{\mathcal{C}}

is called split-exact if there exist exact functors i:β„¬β†’π’œi\colon{\mathcal{B}}\mathchoice{\longrightarrow}{\rightarrow}{\rightarrow}{\rightarrow}{\mathcal{A}} and j:π’žβ†’β„¬j\colon{\mathcal{C}}\mathchoice{\longrightarrow}{\rightarrow}{\rightarrow}{\rightarrow}{\mathcal{B}}, right adjoint to ff and gg, respectively, such that i∘f≃Idi\circ f\simeq\Id and g∘j≃Idg\circ j\simeq\Id via the adjunction morphisms.

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

Andrew J. Blumberg, David Gepner, Goncalo Tabuada

Original source: arXiv:1001.2282v4