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wythagoras

I am a Dutch amateur mathematician currently interested in probability, combinatorics, number theory, calculus, algebra, geometry, set theory, computability theory, graph theory and group theory.

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  • Member for 5 years, 5 months
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  • Last seen Dec 15 '18 at 14:14

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61 Is it possible to describe the Collatz function in one formula? Sep 24 '15
54 What is exactly the difference between a definition and an axiom? Sep 9 '15
45 How do I square a logarithm? May 7 '15
35 Proof of the derivative of ln(x) Jun 28 '15
31 Is there any integral for the Golden Ratio? Feb 14 '16
31 On the probability of getting the same number for three dice Feb 27 '16
29 Past open problems with sudden and easy-to-understand solutions Dec 23 '15
29 Do “other” trigonometric functions than Tan Sin Cos and their derivatives exist? Jun 22 '15
25 Past open problems with sudden and easy-to-understand solutions Dec 23 '15
24 Triangle angles. Feb 15 '16
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