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awarded  Popular Question
1d
comment Minima and maxima of the 6th degree polynomial are not expressible in radicals.
Are you expecting to "show the Abel-Ruffini theorem in just one special case" without showing it in full generality ? This would probably amount to a significantly simpler proof of Abel-Ruffini than all those currently known.
1d
comment Minima and maxima of the 6th degree polynomial are not expressible in radicals.
@wythagoras (1) Sorry, my bad. I dont understand your point (2) though. It would seem from your original question that you want neither the Abel-Ruffini theorem nor Galois theory.
1d
comment Minima and maxima of the 6th degree polynomial are not expressible in radicals.
Proving something algebraic is not expressible in radicals without using Galois theory ???? I'm quite skeptical about that.
1d
awarded  Nice Question
1d
accepted A circle in the plane contains at most four lattice points?
1d
comment A circle in the plane contains at most four lattice points?
This is probably the most elementary solution. Very nice
1d
asked A circle in the plane contains at most four lattice points?
2d
awarded  Nice Question
Jul
29
comment Is $a=\frac{1992!-1}{3449\times 8627}$ a prime number?
@wythagoras and Surb : corrected, thanks
Jul
29
revised Is $a=\frac{1992!-1}{3449\times 8627}$ a prime number?
edited body
Jul
29
asked Is $a=\frac{1992!-1}{3449\times 8627}$ a prime number?
Jul
28
answered Difficult nonlinear system based on max value
Jul
27
revised Decidability of equality of two set-theoretical terms constructed without replacement or specification
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Jul
27
accepted Generalization of Erdos-Selfridge
Jul
26
revised Generalization of Erdos-Selfridge
added 50 characters in body
Jul
26
asked Generalization of Erdos-Selfridge
Jul
19
revised Decidability of equality of two set-theoretical terms constructed without replacement or specification
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Jul
19
revised Decidability of equality of two set-theoretical terms constructed without replacement or specification
added 271 characters in body
Jul
19
revised Decidability of equality of two set-theoretical terms constructed without replacement or specification
added 39 characters in body