Mathematics
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Han de Bruijn
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A little bit of Physics would be NO Idleness in Mathematics

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30 Why does Group Theory not come in here? Jan 4 '14
26 What does shear mean? Jul 12 '16
22 Olympiad Inequality $\sum\limits_{cyc} \frac{x^4}{8x^3+5y^3} \geqslant \frac{x+y+z}{13}$ May 16 '16
20 Indefinite double integral Sep 11 '15
17 How to prove this inequality $(a^2+bc^4)(b^2+ca^4)(c^2+ab^4) \leq 64$? Dec 3 '13
16 Evaluating the limit of $\sqrt[2]{2+\sqrt[3]{2+\sqrt[4]{2+\cdots+\sqrt[n]{2}}}}$ when $n\to\infty$ Jul 25 '14
16 Can $f(\infty)$ be defined if the sequence $f(n)$ is divergent? Mar 12 '15
14 Hole inside cube with tetrahedrons at corners? May 29 '18
12 Iterated Limits Schizophrenia Dec 7 '13
12 Irrational numbers in reality Jan 24 '15
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