在每次約化后, 余下的方程是保持對(duì)稱和帶狀的.After each reduction, the remaining equations remain symmetric and banded.這個(gè)矩陣是對(duì)稱的且是帶狀的, 帶寬等于四.This matrix is symmetric and banded , the band being equal to four.我們?cè)诖蟛糠謱?shí)際問(wèn)題中得到的方程組不僅是對(duì)稱的而且還是帶狀的.The ...