Does von not work
The dictionary does not cite "of" as a translation of uber
Then your dictionary is not thorough enough to cover the full range of possibilities for translating prepositions. They are used in so many different ways that it would be difficult to be exhaustive.
Think of it like "about" instead of "of." In some cases, you can substitute the two words.
Ex: "They spoke of/about important matters."
Über = about in this sentence. It's a theory about literature.
of is not in the dictionary for über.
Can we use the genetive here "Eine Theorie der Literatur"?
The theory about literature. They didn't accept this .
What is the meaning of the sentence?
It's not a real sentence and I don't think it has a specific meaning.
Sure, "Eine Theorie über Literatur" can also be translated as "A theory of literature." Or DUH "A literature theory." Geebuz.
"A literature theory" = "Eine Literaturtheorie" - compound noun. ^^
But hey, that's just a theory! A... literature theory?
A theory about literature was marked incorrect