Kind/book/Kind.reduce.app.kind2
Victor Taelin 85ad65b026 use-notation
Now, there are two local binders:

let x = ...
use x = ...

The 'let' binder will create a local definition, type-check it, and
assign a name to it. When compiled, it will create 'dup' nodes.

The 'use' binder is just an alias. It will not bind a new variable, and,
when compiled, will create inline copies. Also, for type-checking, it
allows creating aliases that are definitionaly equal for the checker.
2024-03-08 17:39:37 -03:00

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Kind.reduce.app
: ∀(maj: Bool) ∀(fun: Kind.Term) ∀(arg: Kind.Term)
Kind.Term
= λmaj λfun λarg
use P = ∀(arg: Kind.Term) Kind.Term
use Y = λnam λbod λarg
(Kind.reduce maj (bod (Kind.reduce maj arg)))
use N = λfun λarg (Kind.app fun arg)
(Kind.if.lam fun P Y N arg)