However , the project has also been criticized for omitting topics such as the mean value theorem , and for its perceived lack of mathematical rigor .
Through the consortium , she is an author of a successful and influential sequence of high school and college mathematics textbooks .
The project has also been criticized for omitting topics such as the mean value theorem , and for its perceived lack of mathematical rigor .
Through the consortium , she is an author of a successful and influential sequence of high school and college mathematics textbooks .