| Nominative | Accusative | Dative | Genitive |
| No Article |
Approximationstheorie |
Approximationstheorie |
Approximationstheorie |
Approximationstheorie |
| |
| Definite Article |
die Approximationstheorie |
die Approximationstheorie |
der Approximationstheorie |
der Approximationstheorie |
| |
| Indefinite Article |
eine Approximationstheorie |
eine Approximationstheorie |
einer Approximationstheorie |
einer Approximationstheorie |
| |
Plural
No Article |
Approximationstheorien |
Approximationstheorien |
Approximationstheorien |
Approximationstheorien |
| |
Plural
Definite Article |
die Approximationstheorien |
die Approximationstheorien |
den Approximationstheorien |
der Approximationstheorien |
