11 lines
206 B
Text
11 lines
206 B
Text
open tactic nat
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constant zadd (a : nat) : 0 + a = a
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constant le.refl (a : nat) : a ≤ a
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attribute [simp] zadd
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example (a : nat) : 0 + a ≤ a :=
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by do simp
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example (a : nat) : 0 + a ≥ a :=
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by do simp
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