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Almost Equal (ほぼ等しい) (Definition II.5.6)

  • Almost Equal (ほぼ等しい) (Definition II.5.6) #Card
    • Two sets $B$ and $D$ are almost equal if their symmetric difference $B \triangle D := (B \setminus D) \cup (D \setminus B)$ is finite.

Back

Section titled “Back”

Two sets $B$ and $D$ are almost equal if their symmetric difference $B \triangle D := (B \setminus D) \cup (D \setminus B)$ is finite.

Lean

Section titled “Lean”

本書独自（核を除いてほぼ等しい）。Lean に直接対応なし