Japan+-+Katum+Wa

=Japan = =Katum Wa =

=Introduction:= We are high school students in Japan. Our school is in CHIBA. We would like to know you and your culture,your daily life. We want to know your daily school life and want to exchange E-MAILS. Our high school is [|SHOIN HIGH SCHOOL] Photo: = = =Student Photo:our another past activities click this and you'll see our pagethis is not math, sorry.=

my favorite equation N = R * Fp * Ne * Fl * Fi * Fc * L Where N = The number of communicative civilizations in the Milky Way, R = The rate of formation of //suitable//stars in the galaxy Fp = The fraction of those stars with planets Ne = The number of "earths" per planetary system Fl = The fraction of those planets where life develops Fi = The fraction of life sites where intelligence develops Fc = The fraction of planets where technology develops L = The "lifetime" of such civilizations releasing detectable signals into space

Calculation of Pi (Π, π) Seki Takakazu (関 孝和, 1642 – December 5, 1708)was a Japanese mathematician in the Edo period. developed Japanese mathematics known as wasan. The calculation of pi; he obtained a value for π that was correct to the 10th decimal place, using what is now called "Aitken's delta-squared process," rediscovered in the 20th century by Alexander Aitken.
 * our math**