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November 26, 2014

Posts by Laurey


Total # Posts: 11

Discrete Math
Thank you for the reassurance.
February 8, 2011

Discrete Math
I think I may have found the problem in my thinking: R2 is not equivalent right? Because it is not transitive. Justification: It is reflexive because the relation does contain (0,0), (1,1), (2,2), and (3,3). It is symmetric because the relation contains (1,3) ⋏ (3,1), ...
February 8, 2011

Discrete Math
Which of these relations on {0, 1, 2, 3} are equivalence relations? Justify the relation(s) that are not equivalent. R1: {(0,0), (1,1), (2,2), (3,3)} R2: {(0,0), (1,1), (1,3), (2,2), (2,3), (3,1), (3,2), (3,3)} R3: {(0,0), (0,1), (0,2), (1,0), (1,1), (1,2), (2,0), (2,2), (3,3...
February 8, 2011

Discrete Math
OooOOo. . .thank you so much for all your help.
February 8, 2011

Discrete Math
So, it is not antisymmetric because 2 ≠ 3, but what would have made it true?
February 8, 2011

Discrete Math
Consider the following relation on R1, the set of real numbers R1 = {(1,1), (1,2), (2,1), (2,2), (3,3), (4,4), (3,2), (2,3)} Determine whether or not each relation is flexible, symmetric, anti-symmetric, or transitive. * Reflexive because the relation contains (1,1), (2,2), (3...
February 8, 2011

Discrete Math
Oh yea I meant to type R1, sorry it was a typo. Thank you for your help MathMate!
February 7, 2011

Discrete Math
R3: Not Reflexive: x ⊀ x Symmetric: Antisymmetric: Not Transitive: I'm not sure how to justify. . . the xy and 0 is throwing me off. . .can you separate them? If that makes any sense. . .I'm lost. But R2 would be considered an equivalent relation because it is ...
February 7, 2011

Discrete Math
Thank you MathMate for your quick reply! I think I understand it a lot better after your post, but I still feel a little fuzzy. So for R1: Reflexive: x = x Symmetric: x = y, then y = x antisymmetric: x = y and y = x that implies x = y (?) Transitive: x = y and y = z, then x = ...
February 7, 2011

Discrete Math
Consider the following relations on R, the set of real numbers a. R1: x, y ∈ R if and only if x = y. b. R2: x, y ∈ R if and only if x ≥ y. c. R3 : x, y ∈ R if and only if xy < 0. Determine whether or not each relation is flexible, symmetric, anti-...
February 7, 2011

Discrete Math
Justifying your conclusions (you could also use examples in order to illustrate your results). What can you say about the sets A and B if we know that: 1. A ∪ B = A 2. A ∩ B = A Thanks for any helpful replies :)
February 4, 2011

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