Nikolaj K.

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A duck walks into a bar. Animal control is promptly called and the duck is released into a near by park.

125 Questions

 41 Is there a function with the property $f(n)=f^{(n)}(0)$? 34 What is the function space generated by addition and $(a,b)\mapsto (a+b)^{-1}\cdot a\cdot b$ of elements and their inverses? 30 What is an efficient nesting of mathematical theorems? 30 What is the algebraic structure of functions with fixed points? 21 What is the topology of a world with portals?

2,049 Reputation

 +15 What is an efficient nesting of mathematical theorems? +5 What is the algebraic structure of functions with fixed points? +30 How to compute the mean average exponent of the naturals? What is the limit for large numbers? +5 Is there a function with the property $f(n)=f^{(n)}(0)$?

 31 Can we get just $3$ from $\pi$? 15 “Immediate” Applications of Differential Geometry 11 Computing $\lim_{s \to 1} \Gamma \left(\frac{1-s}{2}\right) (s-1)$ 8 Solving for $x$: $1=\frac{1}{x}+\frac{1}{1+\frac{1}{x}}+\frac{1}{1+\frac{1}{1+\frac{1}{x}}}+\cdots$ 8 $f(x)=f(x+1)$ and $f(-1/x)=f(x)$

171 Tags

 21 linear-algebra × 8 11 limits × 4 17 soft-question × 11 9 real-analysis × 12 15 calculus × 12 8 sequences-and-series × 9 15 complex-analysis × 9 8 matrices × 6 13 gamma-function × 3 8 problem-solving × 2

29 Accounts

 Mathematics 2,049 rep 1138 Physics 780 rep 730 Philosophy 652 rep 110 Mathematica 621 rep 210 Chemistry 315 rep 15