숫자 163
간단한 소개
\(\large e^{\pi \sqrt{163}}=262537412640768743.9999999999992500725\cdots\)
\(e^{\pi \sqrt{163}} - 262537412640768744 \approx 7.5 \times 10^{-13}\)
\(j({{\sqrt{-163}+1}\over{2}})\)
\(e^{\pi \sqrt{43}} = 884736743.9997774660349066619374620785\)
\(e^{\pi \sqrt{67}} = 147197952743.9999986624542245068292613\)
\(e^{\pi \sqrt{163}} = 262537412640768743.99999999999925007259\)
\(e^{\pi \sqrt{43}} \approx 884736744\)
\(e^{\pi \sqrt{67}} \approx 147197952744\)
\(e^{\pi \sqrt{163}} \approx 262537412640768744\)
셋 모두 끝 세 자리가 744
complex multiplication
j-invariant
\(j(\tau) = \frac{1}[[:틀:Q]] + 744 + 196884{q} + 21493760{q}^2 + 864299970{q}^3 + \cdots\)
이 때, \({q} = e^{2\pi i\tau}\)
\( j(\tau)= {E_4(\tau)^3\over \Delta(\tau)}= q^{-1}+744+196884q+21493760q^2+\cdots\)
\( E_4(\tau)=1+240\sum_{n>0}\sigma_3(n)q^n= 1+240q+2160q^2+\cdots\)
\((\sigma_3(n)=\sum_{d|n}d^3)\) \(\Delta(\tau)= q\prod_{n>0}(1-q^n)^{24}= q-24q+252q^2+\cdots\)
\( j(\frac {-1+\sqrt{-43}} {2})=884736744\)
\( j(\frac {-1+\sqrt{-67}} {2})=147197952744\)
\( j(\frac {-1+\sqrt{-163}} {2})=262537412640768744\)
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참고할만한 자료
- The Ramanujan Constant. An Essay on Elliptic Curves, Complex. Multiplication and Modular Forms.
- B.J.Green
- http://ko.wikipedia.org/wiki/히그너_수
- http://en.wikipedia.org/wiki/Heegner_number
- http://front.math.ucdavis.edu/search?a=&t=&c=&n=40&s=Listings&q=
- http://www.ams.org/mathscinet/search/publications.html?pg4=AUCN&s4=&co4=AND&pg5=TI&s5=&co5=AND&pg6=PC&s6=&co6=AND&pg7=ALLF&co7=AND&Submit=Search&dr=all&yrop=eq&arg3=&yearRangeFirst=&yearRangeSecond=&pg8=ET&s8=All&s7=
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