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Questions designed to generate a "big list" of certain results, examples, conjectures, etc. via many individual answers, each contributing one or a few instances. Such a question should typically be in Community Wiki mode (CW); after asking, please, flag for moderators attention requesting the question to be made CW.

70 votes

Examples of common false beliefs in mathematics

Some people believe there is no "formula" for the nth prime number. Of course there are many such formulas, even though not very useful: https://mathworld.wolfram.com/PrimeFormulas.html The reason giv …