lean-ja / lean-ja/lean-by-example
なぜpriority:= lowにしなくてもエラーにならないのか？
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Description
インスタンス優先度の例として紹介しているアリティの例について。
priority:=low にしなくてもエラーにならないのはなぜ？
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Research direction
Locate the example described as demonstrating instance priorities and arity, then compare its behavior with and without priority := low. Read the surrounding explanation and verify the example in Lean. Done means the documentation clearly explains why no error occurs without that priority setting.
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