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 Dec 14 reviewed Approve How to find the characteristic number of a given integral equation? Dec 11 revised What are good ways of understanding a permutation group from a set of generators? typo in title Dec 8 revised Solve $y^2 = x^4 +x + 2$ in $\mathbb{Z}$. edited body Dec 8 revised Solve $y^2 = x^4 +x + 2$ in $\mathbb{Z}$. minor changes Dec 8 revised Solve this ODE system added text from comment of OP Dec 8 revised Trying to answer this counting question added parathesis, otherwise the formulas are wrong. removed bolf format Dec 6 comment What does this ∩ symbol mean in terms of geometry I rolled back the last edit to make the drawing visible again Dec 6 revised What does this ∩ symbol mean in terms of geometry rolled back to a previous revision Dec 6 comment What does this ∩ symbol mean in terms of geometry So what means (AB || CD) ∩ CK ? Dec 5 reviewed Reject Which of the following function(s) has/have removable discontinuity at $x=1?$ Dec 5 revised Geometry problem… added symbol for right angles to drawing Dec 5 revised $\log(xe^{2\pi i})=$? latex Dec 4 revised Power series expansion of $x\ln(\sqrt{4+x^2}-x)$ latex Dec 3 revised How can I prove that $e^x \cdot e^{-x}=1$ using Taylor series? typo in title Dec 1 comment How to handle this curve? this is your 7th post. you should start to write you formulas in LaTeX Nov 30 answered Basic probability…balls extraction Nov 30 revised Alternative proofs (algebra) typos Nov 30 revised Alternative proofs (algebra) added 1 character in body Nov 30 answered Alternative proofs (algebra) Nov 26 revised Expressing Sets as Regular Expressions typos