Top network posts

• 15 Statement that is provable in $ZFC+CH$ yet unprovable in $ZFC+\lnot CH$
• 10 If a prime number is reversed, and then appended to itself, why is the result always a composite number?
• 9 Proof of non-existence of non-principal $\kappa$-complete ultrafilter
• 8 understanding $\mathbb{R}$/$\mathbb{Z}$
• 7 A question on generators
• 7 A Lattice that is not a Complete Lattice
• 6 How can I expand mathematical induction to rational numbers?
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