Ross Hills
03/31/2024 · Primary School
4. La densité en termes d'intervalles ouverts. Démontrer que les condi- tions suivantes sont équivalentes pour toute partie \( A \) de \( \mathbb{R} \). (a) \( A \) est dense dans \( \mathbb{R} \). (b) Si \( a
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Pour prouver l'équivalence des conditions, il faut montrer que chaque condition implique les autres : (a) \( A \) est dense dans \( \mathbb{R} \), (b) pour tout \( a
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