Top network posts

• 40 "Negative" versus "Minus"
• 30 Are the axioms for abelian group theory independent?
• 26 If $\gcd(a,b)=1$, then $\gcd(a^n,b^n)=1$
• 25 Is $\{\emptyset\}$ a subset of $\{\{\emptyset\}\}$?
• 22 $\{1,1\}=\{1\}$, origin of this convention
• 21 Prove/Disprove that if two sets have the same power set then they are the same set
• 19 Prove that every element of a finite group has an order
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