A symbol used to denote lags of a variable: if L is the lag operator then Lyt ≡ yt−1, L2yt ≡ L(Lyt) = yt−2, etc. Standard rules of summation and multiplication can conveniently be applied to the expressions containing lag operators.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。