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### Questions (70)

 14 Why are “algebras” called algebras? 7 Why is topological group not a popular topic? 6 Rudin's 'Principle of Mathematical Analysis' Exercise 3.14 4 Divisibility of $\lfloor (1+\sqrt{3})^{2m+1}\rfloor$ by $2^k$ 4 How to solve the system $t\frac{dx}{dt}=-x+yt$, $t\frac{dy}{dt}=-2x+yt$?

### Reputation (1,681)

 +10 Simplicial homotopy's exponential law +50 What's the difference between simple induction and strong induction? +5 $\sum_{k=0}^{n-1}\sin(k\frac{\pi}{n}+\theta)$ +5 Is it true that $\pi_n(X^{n-1})=0$ for $n>1$ if $X$ is $K(G,1)$ space?

 27 What's the difference between simple induction and strong induction? 5 Structured Self-Learning Program for Calculus I & II 4 Trigonometry : Simplify and find the value of $\tan\theta(1-\sec\frac{\theta}{2})(1-\sec\theta)(1-\sec2\theta)\dots(1-\sec2^{n-1}\theta)$ at n =1,2,3 3 Good text on Differential manifolds? 3 integration of $\int_{0}^{\infty} e^{-ax}\Sigma_{0}^{\infty} \frac{(-1)^n x^{2n}}{4^n (n!)^2}dx$

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 27 induction × 2 5 book-recommendation × 8 12 calculus × 12 5 soft-question × 6 8 reference-request × 5 5 integration × 5 7 self-learning × 3 4 real-analysis × 6 6 education × 2 4 general-topology × 5

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