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4: Co-design - Profunctors and Monoidal Categories

  • Page ID
    54909
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    • 4.1: Can we build it?
      When designing a large-scale system, many different fields of expertise are joined to work on a single project. Thus the whole project team is divided into multiple sub-teams, each of which is working on a sub-project. And we recurse downward: the sub-project is again factored into sub-sub-projects, each with their own team. One could refer to this sort of hierarchical design process as collaborative design, or co-design. In this chapter, we discuss a mathematical theory of co-design.
    • 4.2: Enriched Profunctors
      In this section we will understand how co-design problems form a category. Along the way we will develop some abstract machinery that will allow us to replace preorder design spaces with other enriched categories.
    • 4.3: Categories of Profunctors
      There is a category Feas whose objects are preorders and whose morphisms are feasibility relations. In order to describe it, we must give the composition formula and the identities, and prove that they satisfy the properties of being a category: unitality and associativity.
    • 4.4: Categorification
    • 4.5: Profunctors form a Compact Closed Category
      In this section we will define compact closed categories and show that Feas, and more generally V-profunctors, form such a thing. Compact-closed categories are monoidal categories whose wiring diagrams allow feedback.
    • 4.6: Summary and further reading


    This page titled 4: Co-design - Profunctors and Monoidal Categories is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Brendan Fong & David I. Spivak (MIT OpenCourseWare) via source content that was edited to the style and standards of the LibreTexts platform.