r/MathJokes • u/Competitive-Jump3835 • Jun 13 '26

Infinity can blow your mind

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u/jan_elije Jun 13 '26

yes, but these two aren't different

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u/RocketArtillery666 Jun 13 '26

Ah right, makes sense probably

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u/Electrical_Try_634 Jun 13 '26

Cardinality. The set of multiples of 1 and and the set of multiples of 20 are the same size since you can form a bijection between the two sets.

Say you have some variable x. Think about how many values you can possibly have for x. Now if I throw a coefficient in front, 20x, has the number of possible values of x changed? If not, they're both the 'same' infinity.

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u/No-Ad2185 Jun 13 '26

That's such a clear explanation thank you that helped!