/Я language (β)/Operators/ya/

[Y]oneda functor mapping contr[A]variantly
`ya`² : target ( t a ) ( target ( source ( o ) ( a ) ) ( t o ) )

`yai`³ : target ( t a _ ) ( target ( source ( o ) ( a ) ) ( t o _ ) )
`yia`³ : target ( t _ a ) ( target ( source ( o ) ( a ) ) ( t _ o ) )
`yaa`³ : target ( t a a ) ( target ( source ( o ) ( a ) ) ( t o o ) )

`ya`², `ya_`³, `ya__`⁴, `ya___`⁵, `ya____`⁶, `ya_____`⁷.