/Я language (β)/Operators/yak/

(`ya`) [Y]oneda functor mapping contr[A]variantly (`xk`) Source lax [K]leisli morphism
`yak`³ : target ( t a ) ( target ( source ( o ) `PLL` tt a `PRL` ) ( t o ) )

`yak` : target ( t a ) ( target ( source ( o ) ( tt `L` tt `T` ll `T` a ) ) ( t o ) )

`yak`³, `yak_`⁴, `yak__`⁵, `yak___`⁶, `yak____`⁷.