ppProofs.lean:1:47-1:48: error: don't know how to synthesize placeholder
context:
α β : Sort u_1
b : β
a : α
h : α = β
⊢ h ▸ a = b
ppProofs.lean:2:50-2:51: error: don't know how to synthesize placeholder
context:
α β : Sort u_1
b : β
a : α
h : α = β
⊢ (_ : α = β) ▸ a = b
ppProofs.lean:3:50-3:57: error: unsolved goals
α β : Sort ?u
b : β
a : α
h : α = β
⊢ (_ : α = β) ▸ a = b
ppProofs.lean:5:50-5:51: error: don't know how to synthesize placeholder
context:
α β : Sort u_1
b : β
a : α
h : α = β
⊢ _ ▸ a = b
ppProofs.lean:7:50-7:51: error: don't know how to synthesize placeholder
context:
α β : Sort u_1
b : β
a : α
h : α = β
⊢ id h ▸ a = b