PS

Opposite enriched category

Opposite enriched category

  • symmeric monoidal category:  \mathcal{V}
  •  \mathcal{V}-category:  \mathcal{A}

について、opposite  \mathcal{V}-category:

  •  \mathcal{A} ^ {\operatorname{op}}

を次のように定義できる:

f:id:mbps:20150325052850p:plain

f:id:mbps:20150325052857p:plain

f:id:mbps:20150325052905p:plain

Opposite enriched functor

 \mathcal{V}-functor  T : \mathcal{A} \to \mathcal{B} について、opposite  \mathcal{V}-functor:

  •  T ^ {\operatorname{op}} : \mathcal{A} ^ {\operatorname{op}} \to \mathcal{B} ^ {\operatorname{op}}

を次のように定義できる:

f:id:mbps:20150325052913p:plain

Opposite enriched natural transformation

 \mathcal{V}-natural transformation  \alpha : T \Rightarrow S について、opposite  \mathcal{V}-natural transformation:

  •  \alpha ^ {\operatorname{op}} : S ^ {\operatorname{op}} \Rightarrow T ^ {\operatorname{op}}

を次のように定義できる:

f:id:mbps:20150325052923p:plain

命題

  1.  ( \mathcal{A} ^ {\operatorname{op}} ) ^ {\operatorname{op}} = \mathcal{A}
  2.  ( \mathcal{A} \otimes \mathcal{B} ) ^ {\operatorname{op}} = \mathcal{A} ^ {\operatorname{op}} \otimes \mathcal{B} ^ {\operatorname{op}} *1
  3.  \lbrack \mathcal{A} ^ {\operatorname{op}}, \mathcal{B} ^ {\operatorname{op}} \rbrack \cong \lbrack \mathcal{A}, \mathcal{B} \rbrack ^ {\operatorname{op}} *2

参考文献