Relations and Functions: What is a Reflexive Relation?

`This short video provides an explanation of what a reflexive relation is, a encountered in the topic: Sets, Relations, and Functions.

[lironcooper]

This was an absolutely incredible explanation! This truly deserves far more views!

[ajm]

Thank you! A lot of videos I have come across failed to mention the point that it must contain ALL (x, x). It might sound stupid but your video is one of the best explanations!

[mattspy]

I agree with others here, this is the best explanation. Thank you so much!

[fadiamelia]

thank you for the explanation. have a nice day

[honk]

Thank you so much for this explanation!

[oshawastaken]

Dont undestand shit from my class but this def made it so even my small brain could understand. Thank you sir bless ur heart

[aaronayubasamaila]

This is the simplest explanation of relation i've seen so far in my surf through youtube for added knowledge on relations. But I have a question

What if R5 = A x A, will it still be a reflexive relation? If yes, what are the reasons. If no, then why?

Thank you. Expecting your reply.

[abdulmalekalmkainzi]

one question: what if the relation contains (x, x) for every x in A but also has other elements, is it still reflective?

[ic]

Hi,
I have a question, if the relation contains only 2 of (x, x) e.g. (1, 1), (2, 2) is it still reflexive?
Or does it need all 3 elements - (1, 1), (2, 2) and (3, 3)??
Thanks

[Abhi-ukxu]

Sir, I read 2^nsquare - n is used to find the number of reflexive relations. As per ur example number of reflexive relatives to be 64 right ?

[ProtValnus]

Another question since in you example R1, 3 and 4 are not reflexive does that make them irreflexive by definition.

[naruna]

Not nice no clear voice and no clear board. And can't understand