# rafik

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bio website i3gaz.com location Algeria, yabous , khenchela age 26 member for 6 months seen Nov 30 at 16:21 profile views 210

no job ,but i'm one of interesting to number theory and Riemann hypothesis . in general i'm interested to mathematical and physics

# 30 Questions

 7 for which value of $a$ that $\big(\sum\frac {1}{u_n}\big)$ converges? 3 A primitive function of $e^{x^{2}}$ 3 In which field of science that we can prove $0! =1$ and what i can say to studentof high school if he asked about it's prove ?? [duplicate] 2 how I could find the number of zeros at the end of $(5^n-1) !$? [closed] 2 How I could show that :$\log1=0$?

# 377 Reputation

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 2 How i could prove this:$F(x)=\int_{0}^{\pi/2} \cos^{x}\! \theta \cos(x\theta){\mathrm{d}}\theta$= $\frac{\pi}{2^{a+1}}, \quad$ 1 Calculate: $F(x)=\int_{0}^{+\infty}\frac{e^{i xt}}{t^{\alpha}}dt\quad \text{avec}~x\in \mathbb{R}~\text{ et }~0<\alpha<1$ 1 What are the most important functions every mathematician should know? 1 When can I interchange $\liminf$ and integral? 0 Values of Incomplete gamma function

# 44 Tags

 3 integration × 10 1 intuition 2 definite-integrals × 4 1 limsup-and-liminf 1 complex-analysis × 6 1 self-learning 1 functional-analysis 1 special-functions 1 functions 0 convergence × 5

# 2 Accounts

 Mathematics 377 rep 9 MathOverflow 101 rep 6