I don't understand why the Dirichlet function is continuous in 0 because between 0 and the nearest positive rational number there will be an irrational number also between 0 and the nearest negative rational number there will be an irrational too. How can be this function continuous in 0?
2026-03-29 14:55:52.1774796152
How can be the Dirichlet function continuous in 0?
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