/Я language (β)/Primitives/Event/

: ( i `TR` ii ) ~ ( ii `RT` i ) ~ ( Event i ii ) ~ ( Transition i ii )
: Supertype ( Event i ii ) ~ ( i `AR_` ii `P` i )
: Supertype ( State i ii ) ~ ( Event i ii )
> Event : i `AR_` ii `P` i `AR____` Event i ii

> `yai` : a o . Event a _ `AR_____` a `TA____` o `AR____` Event o _
> `yai` : a o . Event a _ `AR_____` a `RT____` o `AR____` Event o _
> `yio` : a o . Event _ a `AR_____` a `AR____` o `AR____` Event _ o
> `yio` : a o . Event _ a `AR_____` a `TR____` o `AR____` Event _ o
> `yior` : a o . Event i o `AR____` i `AR__` o