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Let1≤ m ≤ n. Show that (a). Km ∩ Kn = Km, (b). Km ∪ Kn...

Let1≤ m ≤ n. Show that

(a). Km ∩ Kn = Km,

(b). Km ∪ Kn = Kn,

(c). Km ⊆ Kn.

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