### Answers (405)

 48 How to solve fifth-degree equations by elliptic functions? 37 Is there a symbol for plus and minus as opposed to plus or minus? 25 How to transform a general higher degree five or higher equation to normal form? 24 Rational solutions to $a+b+c=abc=6$ 22 Motivation for Ramanujan's mysterious $\pi$ formula

### Reputation (28,296)

 +20 Solving 5th degree or higher equations +5 More on $\sum_{n=1}^\infty\frac{(4n)!}{\Gamma\left(\frac23+n\right)\,\Gamma\left(\frac43+n\right)\,n!^2\,(-256)^n}$ +5 More on the log sine integral $\int_0^{\pi }\theta ^{3}\log^{3}\left ( 2\sin\frac{\theta }{2} \right )\mathrm{d}\theta$ +5 More on the integral $\int_0^1\int_0^1\int_0^1\int_0^1\frac{1}{(1+x) (1+y) (1+z)(1+w) (1+ x y z w)} \ dx \ dy \ dz \ dw$

### Questions (286)

 85 How did Hermite calculate $e^{\pi\sqrt{163}}$ in 1859? 72 Mathematicians shocked(?) to find pattern in prime numbers 55 On Ramanujan's curious equality for $\sqrt{2\,(1-3^{-2})(1-7^{-2})(1-11^{-2})\cdots}$ 52 A curious equality of integrals involving the prime counting function? 51 Generalizing the sum of consecutive cubes $\sum_{k=1}^n k^3 = \Big(\sum_{k=1}^n k\Big)^2$ to other odd powers

### Tags (186)

 336 diophantine-equations × 207 135 galois-theory × 33 323 number-theory × 214 107 radicals × 66 175 elementary-number-theory × 79 95 pi × 39 175 polynomials × 60 94 elliptic-functions × 12 147 sequences-and-series × 91 92 algebra-precalculus × 39

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