Top network posts

• 36 Why weren't continuous functions defined as Darboux functions?
• 33 In a right triangle, can $a+b=c?$
• 26 Is there any way to define arithmetical multiplication as other thing than repeated addition?
• 26 Is every noninvertible matrix a zero divisor?
• 26 Why do we use "congruent to" instead of equal to?
• 25 Were "real numbers" used before things like Dedekind cuts, Cauchy sequences, etc. appeared?
• 19 How to show these two graphs are not isomorphic?
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