The Fortress Language Specification - CiteSeerX

Valid function declarations: p ⊢ validFun( −→ d )
[VALIDFUN]
∀ fd,fd ′ ∈ −→ d .
where fd ≠ fd ′ (not same declaration),
fd = f −−−−−−−−−→ αextends N( −−→ :τ):τ r = , fd ′ = f −−−−−−−−−−→ α ′ extends N ′ ( −−→ :τ ′ ):τ r′ = ,
p ⊢ valid( −−−−−−−−−→ αextends NObject −→ τ → τ r , −−−−−−−−−−→ α ′ extends N ′ Object −→ τ ′ → τ r′ , {(fd,Object) | fd ∈ −→ d })
p ⊢ validFun( −→ d )
Valid declarations: p ⊢ valid( −−−−−−−−−→ αextends N −→ τ → τ, −−−−−−−−−→ αextends N −→ τ → τ, { −−−→ (fd, τ)})
∆ =
−−−−−−−→
α