A concise, beginner-friendly introduction to the core ideas of linear algebra. - little-book-of/linear-algebra ...

What began with a focus on weather forecasting has evolved toward addressing errors in scientific modeling. In the collaborative environment of the Penn State Institute for Computational and Data ...

Work at your own pace to finish this certificate on your own schedule.

那天来的，是在多伦多大学就读的一位男生。推开门的时候，整个人有点塌着肩，坐下后把包放在脚边，没太看我，声音压得很低。他说 GPA 掉得太厉害，现在毕业卡住了，本来已经延迟一年，原本以为“再拼一下就能过去”，结果这学期的 “Operations Research” 和 “Intermediate Microeconomics II” 又没拉起来。