Are there any mathematical discoveries that are considered trivial or useless? And if that's the case, how do you know if they are trivial or useless? I am asking this question, because I am wondering if imaginary numbers were considered useless for so long why we didn't completely ignore it and decided to forget it was ever discovered.
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5Does this answer your question? Useless math that became useful – Brian61354270 Jan 27 '20 at 02:00
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Yes, absolutely. Trivial examples are my favorite because they're very easy. I've certainly discovered some useless things in my spare time and I expect they will always remain useless. – CyclotomicField Jan 27 '20 at 02:40