f0b2621047
otherwise we would not catch changes to the shape of these equational lemmas. Also, no need to manually trigger the generation of these lemmas.
20 lines
409 B
Text
20 lines
409 B
Text
def f (x : Nat) : Nat :=
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if h : x = 0 then
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1
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else
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f (x - 1) * 2
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decreasing_by
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apply Nat.pred_lt
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exact h
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/-- info: f.eq_1 (x : Nat) : f x = if h : x = 0 then 1 else f (x - 1) * 2 -/
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#guard_msgs in
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#check f.eq_1
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/-- info: f.eq_def (x : Nat) : f x = if h : x = 0 then 1 else f (x - 1) * 2 -/
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#guard_msgs in
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#check f.eq_def
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/-- error: unknown identifier 'f.eq_2' -/
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#guard_msgs in
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#check f.eq_2
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