For an n×n matrix A with columns v1, v2,…,vn it follows that |detA|≤|v1| |v2|×···× |vn|, where det denotes determinant. If A is invertible, then equality holds if and only if the columns are mutually perpendicular.
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。