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?? Humpleupagus ?? (humpleupagus@eveningzoo.club)'s status on Friday, 21-Jul-2023 09:45:39 JST?? Humpleupagus ?? Well.... any mathematics as a branch is usually internally consistent. But whether it represents something about reality is a separate issue. For a long time people thought Euclid had discovered something true about reality until Reimann and Lobachevsky brought his idea of a "straight line" into question.