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P_{k} = r \left( \cos{2 \pi \frac{k}{n}} + \mathrm{i} \sin{2 \pi \frac{k}{n}} \right)
I_C=I\frac{R+R_E}{kR+R_E}
F_0 = 0, F_1 = 1, F_{n+2} = F_{n+1} + F_n
P(H=1)&=&P\bigg(\bigcap_{p:{\rm prime}}(E_p\cap F_p)^c\bigg)\\
&=&\prod_{p:{\rm prime}}P<span class=
\purinev{4==NH$\mathrm{_2}$;6==H;2==H;1==H}