(M1E11) [Microeconomics] How to Prove/Disprove a Binary Relation is a Preference Relation: Example 1

In this example we (dis)prove that a binary relation is complete and reflexive. In the next episode we argue transitivity of this preference relation.

[dario]

Thanks for your playlist. It is priceless to have these lectures on youtube for free!

[lonemaven]

Is the definition you made for the comparison of vectors which is "(x, y) ≥ (u, v) if and only if x ≥ u and y ≥ v" just an assumption that you made for this problem in order to disprove completeness? Or is that something accepted/implied as true in general? Thanks!