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20
votes
4answers
658 views

Why use Konjunktiv I in mathematics?

Konjunktiv I is mostly used for indirect speech and wishes. The following sentence is neither. Die Funktionen ψ_n(x) seien Eigenfunktionen eines Hamiltonoperators Ĥ. Why is the Konjunktiv I used ...
2
votes
2answers
117 views

Subjunctive I in “Man denke beispielsweise an die Integration rationaler Funktionen”

I came across this in a math book: Schon in der reellen Analysis ist es gelegentlich vorteilhaft, komplexe Zahlen einzuführen. Man denke beispielsweise an die Integration rationaler Funktionen, ...
10
votes
3answers
172 views

Konjunktiv in mathematics without subject at the beginning

A follow-up question to the use of "sei" in mathematics. Compare the two following sentences, which are both common: Es sei f eine stetige Funktion. Sei f eine stetige Funktion. Would ...
5
votes
1answer
176 views

When speaking about oneself, should Konjunktiv I or Indikativ be used?

I was reading about the use of Konjunktiv I, and read that it is really only used by reporters. However, this got me thinking, if I were a reporter, and I were talking about something I said, would ...
4
votes
1answer
299 views

Konjunktiv 2 Plural von kennen

Neulich las ich in der "Zeit" einen Satz, der mich im Lesefluß stocken ließ. Ich kann mich nicht genau an den Satz erinnern, daher hier eine "in etwa-e" Wiedergabe: Die Behauptung vieler ...
3
votes
2answers
135 views

Subjunctive II in “fast” case

The (past) subjunctive II is usually used to express imagined results in the past that are the opposite to the reality. Wenn mich jemand gewarnt hätte, hätte ich den Fehler nicht gemacht. "If ...
3
votes
3answers
794 views

Can it be correct to use “sei” instead of “ist” in this sentence?

Could someone please tell me if this sentence is correct? "Es sagt, daß das verboten sei."
1
vote
2answers
80 views

Konjunktiv II expressing likelihood vs. expressing unreal event

I tried to ask a question about the two meanings of Konjunktive II with a modal verb, but chose a bad example which led the discussion astray. Let me try a better one here. Look at the English ...
1
vote
4answers
102 views

Subjunctive I for recommendation?

Wer sich die Fotos zu Hause anschauen möchte, dem sei der Ausstellungskatalog empfohlen. Why is the Subjunctive I "sei" used here? Is it to make a recommendation?
0
votes
3answers
120 views

Konjunktiv II with passive in perfect and modal verb

The English sentence He must have been killed. can mean two things: (1) He is now dead. It is likely that he has been killed. (2) He is alive. He deserves to be dead, but he isn't. (similar to ...
0
votes
4answers
438 views

Indirect speech in this context

If I want to say, I told you I was proud of you, what do I say? Ich sagte dir, dass ich auf dich stolz sei. Ich sagte dir, dass ich auf dich stolz wäre.