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If cardinality is a measure of how large a set is, then why is ℤ = ℤ! = |ℚ|,when clearly ℚ > ℤ > |ℤ! | ?

Question

If cardinality is a measure of how large a set is, then why is ℤ = ℤ! = |ℚ|,when clearly ℚ > ℤ > |ℤ! | ?
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Solution 1

The question seems to be about the concept of cardinality in set theory, a branch of mathematical logic.

First, let's clarify what these symbols mean:

  • ℤ represents the set of all integers.
  • ℤ! represents the set of all factorials of integers.
  • ℚ represents the set of all rational numbers (num Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
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Knowee AI  is a powerful AI-powered study tool designed to help you to solve study problem.
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