Top network posts

• 12 Show that $x^2 + y^2$ and $x^2 - y^2$ cannot both be perfect squares at the same time where $x, y \in \mathbb{Z}^+$.
• 9 Why the hyperoctahedral group is a ``reductive'' group?
• 9 Group of order $5p^aq^b$
• 8 On the existence of field morphisms
• 8 Weil's Riemann Hypothesis for dummies?
• 7 An explicit construction for an everywhere discontinuous real function with $F((a+b)/2)\leq(F(a)+F(b))/2$?
• 7 Geometric and arithmetic Frobenius
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