| Harry spent Monday to Thursday going through a series of rigorous assessments alongside 31 other candidates. |
| That is why there needs to be a system of rigorous and robust inspections allied with heavy sanctions to enforce minimum standards. |
| The Gymnasien were raised above all other schools, and the Abitur, which qualified for university admission, was made more rigorous. |
| His main work involved applying philosophy to mathematics, the philosophy taking precedence over rigorous mathematical proofs. |
| Nguyen's work is one manifestation of her longstanding love for rigorous and creative mathematical proofs. |
| Can we really quantify costs in such a rigorous way, for the world as a whole and for a century or more hence? |
