May 2021 1 180 Report
¿Ayuda por favor?

Sean A, B y C conjuntos tales que A ∩ B = ∅ = C ∩ B

Mostrar que:

1.Si A ∼ C, entonces A ∪ B ∼ C ∪ B

2, Si A y B son finitos, entonces A ∪ B tambien es finito y ademas lA ∪ Bl = lAl + lBl

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