/Я language (β)/Operators/yakl/

(`ya`) [Y]oneda functor mapping contr[A]variantly (`xk`) Source lax [K]leisli morphism (`xl`) Target lax K[L]eisli morphism
`yakl`⁴ : target ( t a ) ( target ( source ( o ) `PLL` tt a `PRL` ) ( tt ( t o ) ) )

`yakl` : target ( t a ) ( target ( source ( o ) `PLL` tt `L` tt `T` ll `L` t `T` l `T` a `PRL` ) ( tt ( t o ) ) )

`yakl`⁴, `yakl_`⁵, `yakl__`⁶, `yakl___`⁷.