
Tutorium 2
Authored by Immanuel Reitz
Mathematics
University
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5 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Sei M ≔ {a, b, c, d, e} und P ≔ {{a, b}, {c}, {d, e}} eine Partition von M.
Welche der folgenden Mengen Ri sind Repräsentantensysteme für P?
R1 ≔ {{a}, {c}, {d}}
P2 ≔ {a, c, e}
P3 ≔ {a, b, c, d}
R4 ≔ {c, d, b}
P5 ≔ {b, c, d, e}
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Sei M ≔ {a, b, c, d}.
Welche der folgenden Mengensysteme Pi ⊆ P(M) sind Partitionen von M?
P1 ≔ {{a, b}, {c}}
P2 ≔ {{a, d}, {c}, {b}}
P3 ≔ {∅, {a, c}, {b, d}}
P4 ≔ {{a, b}, {c, b}, {d}}
P5 ≔ {{a, b, c, d}}
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Sei P ≔ {{a, b}, {c}, {d, e}} eine Partition mit Äquivalenzrelation R = RP.
Welche Aussagen sind wahr?
aRc
Für jedes Repräsentantensystem R gilt: c ∈ R
¬ (aRd)
dRe
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Sei p: M → N eine Abbildung.
Was gilt?
Ist p surjektiv, so bilden die Fasern von N eine Partition von M.
Ist p injektiv, so bilden die Fasern von N eine Partition von M.
Die Fasern von Bild(p) bilden eine Partition von M.
Jede Partition ist eine Faserpartition.
Ist p bijektiv, so gibt es ein eindeutiges Repräsentantensystem für die Faserpartition.
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Sei R eine Äquivalenzrelation auf M.
Was gilt?
∀x∈M: xRx
∀x,y∈M: xRy ∧ yRx => x=y
∀x,y,z∈M: xRy ∧ yRz => xRz
∀x,y∈M: xRy => yRx
Ist R die Äquivalenzrelation zu einer Partition P, so gilt: P = M/R
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