Minimum Element

Calculus Level 2

I have 2 sets such that

  • the elements of both these sets are all positive numbers;
  • one of them has infinitely many elements, while the other has finitely many elements.

The finite set has a minimum element, that is, there exists an element in the set such that every other element in the set is greater than it.

Will the infinite set also have a minimum element?

No, not necessarily Yes, always

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1 solution

As a counterexample, the set (1, 0.1, 0.01, 0.001,... ) has no minimum element because every is smaller than the previous one.

Is 0 counted as a positive number?

Kaushik Chandra - 3 years, 4 months ago

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No, zero is not a positive number. A positive number is defined as a number greater than zero.

Juan Eduardo Ynsil Alfaro - 3 years, 4 months ago

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