1. In the diagram below, there are 9 points and 8 lines: (a) Let be the relation between the points in the diagram, where AB if one of the 8 lines passes through both A and B. Explain why is not an equivalence relation. (b) Let o be the relation between the lines in the diagram, where l₁ ol2 if either l1=l₂ or else 1 and 2 have no points in common. This is an equivalence relation! Find the equivalence classes of o.
1. In the diagram below, there are 9 points and 8 lines: (a) Let be the relation between the points in the diagram, where AB if one of the 8 lines passes through both A and B. Explain why is not an equivalence relation. (b) Let o be the relation between the lines in the diagram, where l₁ ol2 if either l1=l₂ or else 1 and 2 have no points in common. This is an equivalence relation! Find the equivalence classes of o.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:1. In the diagram below, there are 9 points and 8 lines:
(a) Let be the relation between the points in the diagram, where A + B if one of the
8 lines passes through both A and B.
Explain why is not an equivalence relation.
(b) Let o be the relation between the lines in the diagram, where l10 l2 if either l₁ = 12
or else 1 and 2 have no points in common.
This is an equivalence relation! Find the equivalence classes of o.
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