Let A and B be two nonempty sets. Assume there exist f : A → B and g : B → A which are 1-to-1 (or injective). Then there

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answerhappygod
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Let A and B be two nonempty sets. Assume there exist f : A → B and g : B → A which are 1-to-1 (or injective). Then there

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Let A and B be two nonempty sets. Assume there exist f :
A → B and g : B → A which are 1-to-1 (or injective). Then there
exists a bijection
h : A → B. This conclusion is known as the Schr¨oder–Bernstein
theorem.
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