Top network posts

• 120 If $2^x $and $3^x$ are integers, must $x$ be as well?
• 61 How to write $\aleph$ by hand
• 49 What is the cardinality of the set of all topologies on $\mathbb{R}$?
• 43 Finite extension of fields with no primitive element
• 33 Proof of no prime-representing polynomial in 2 variables
• 32 Proof of recursive formula for "fusible numbers"
• 31 A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language
• View more network posts →