Hot answers tagged mathematics
Both is correct. The "Vereinigungsmenge" is read as: A vereinigt mit B or Die Vereinigung(or Vereinigungsmenge) von A und B Consequently, the "Schnittmenge" is read as: A geschnitten mit B or Die Schnittmenge von A und B Wikipedia is indeed a great place to start, but I also suggest – in case you're interested in maths – to watch lectures on Youtube. ...
This construction uses a form of subjunctive (Konjunktiv I) in the main clause and expresses a request, more or less equivalent in meaning to a sentence using the imperative. The imperative form is actually used in some mathematical texts as well, particularly more recent texts. The imperative can be perceived as quite blunt; on the other hand, man + ...
Both algebraical constructs can be expressed using modulo. Factorized constructs like $F/\sigma_n$ are read F durch die symmetrische Gruppe or F (faktorisiert) nach der symmetrischen Gruppe or F modulo symmetrische Gruppe or F modulo der symmetrischen Gruppe (I haven't heard anybody say F modulo die symmetrische Gruppe but I wouldn't even bother if I ...
You are right, it's not an imperative, it's a subjunctive. The same form is often used in recipes, for example, "Man nehme 3 Eier".
I do not know if I am an expert, but I am a German mathematician. I would use the genitive case.
I would recommend that you start off by purchasing a basic German 101 book for college. For example, you could buy this: http://www.amazon.de/Wie-Gehts-Introductory-German-Course/dp/1413012825 There are several versions, you might be able to find an older version or a used one from a student. Each chapter contains a conversation and a vocabulary box for ...
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