Top network posts

• 27 Are there rigorous formulation and proof of the pigeonhole principle?
• 27 Proving that $\arctan(x)+\arctan(1/x)=\pm \pi/2$, could this line of reasoning possibly be correct?
• 20 Electromagnetism problem: where does the magnetic field come from?
• 15 What did the nobles do after the French Revolution?
• 14 Proving theorems on one's own: how long should one persist?
• 11 Do Maxwell's equations imply that still charges produce electrostatic fields and no magnetic fields?
• 9 Olympic number theory problem: is this solution fine and sufficiently well written?
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