EDB β€” 0R3

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Exercises

  1. [0R3] Let (X,d) be a metric space and ∼ an equivalence relation on X. Let Y=X/∼ be the quotient space. We define the function 𝛿:Y2→ℝ as

    (1)𝛿(x,y)=inf{d(s,t):s∈x,t∈y}  .
    57

    Is it a distance on Y? Which properties does it enjoy among those indicated in [0MS]?

    Solution 1

    [0R4]

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