36 lines
307 B
Markdown
36 lines
307 B
Markdown
# Woche 13 #
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ℤ/10
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0 1 2 3 4 5 6 7 8 9
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x √ x √ x x x √ x √
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invertierbare Elemente: {1, 3, 7, 9}.
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k invertierbar in ℤ/n
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⟺ ggT(k, n) = 1
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⟺ k, n teilerfremd
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TODO: Inverse von Zahl modulo p
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ℤ/2
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0 1
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- 1
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ℤ/3
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0 1 2
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- 1 2
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ℤ/5
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0 1 2 3 4
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- 1 3 2 4
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ℤ/7
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0 1 2 3 4 5 6
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- 1 4 5 2 3 6
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