Discrete Math 9.3.1 Representing Relations Using Matrices

[gvaidya]

0:00 representing relations with matrixes
4:46 Properties of matrices - reflexive
6:04 Irreflexive property of matrices
6:33 Symmetric property of matrices
7:30 Antisymmetric property of matrices
8:27 Operations on matrices
15:30 Transitive property of matrices

[saadafm]

This video will be of relevance for at least another decade on Youtube and I will be here 10 years later looking at my comment and remembering how grateful I am for this woman

[voiceofthewolf]

Studying for the FE exam and I sometimes run into concepts that I didn't cover (or remember) in class. This video is super straightforward and explains it well. I also appreciate that the sections are defined pretty well, so it's easy to jump ahead if you feel like you have a handle on that section.

[saadafm]

Professor Brehm. You are so good at teaching its inspiring.

[vishwaksenreddydareddy]

Ma'am you inspired me to become a mathematian, I'll never forget you.
You just changed me

[yoyosingh]

You are the best! You deserve the world for free and knowledgeable education unlike my professor who gets paid and doesn’t teach for life

[thilinadhananjaya]

My lecture just read slides that we never knew and, gave us the example question as an assignment .... No examples, No graphical explanations nothing... just read a bunch of symbols to us...

Thank you for this

[StoneColdMagic]

Excellent video. However, there is a mistake 17:38. You said that if it's symmetric then it is not anti-symmetric. However, that's not necessarily true. Consider the matrix that represents the relation R = {(1, 1), (2, 2), (3, 3), (4, 4)}. It is both symmetric and anti-symmetric. :)

[smley]

cant we just fire my professor and bring you to my university to teach me ? :)

[Arjit_IITH]

Quick and Understandable. Great work mam.

[elajgorgui]

very useful, my english is not very strong (i speak french) but i understand very well your explaination... merci beaucoup madame

[shakarak]

Great video! My professor also requires we know how to determine Asymmetric and Transitive matrices, so that would have been helpful to have as well.

[mohibfayyaz]

You are doing Great Job Ma'm..
but please try to make a videos on solving problems of exercises in the end of topics.. Problems are far more difficult than examples, and i'm getting so much confused..

[samimahassan]

thanks mam i was about to cry watching this nice video

[peerless]

Umm your too useful and understandable....💫❣

[akeelmedina]

Can you explain why we square a matrix to check for transitivity?

[sarahaaliya]

Thank you for sharing. This video helps me a lot.

[rawandrandomgameplay]

How am I suppose to find ''R''.... Is it already given? because I'm not able to see any kind of specific rule to find that. I went on wiki they simply used 'AxA' with A having 4 elements. R = { (1, 1), (1, 2), (1, 3), (1, 4), (2, 2), (2, 3), (2, 4), (3, 3), (3, 4), (4, 4) } and Relation R defined as ''aRb'' with no reminder. I believe there would be something that would be saying ''find R'' or It would be given. Correct me If I'm wrong. PLEASE!

[isaacsilva]

Hi, can you do Mg o Ms even if they dont have the same size?

[august-hgvw]

in 16:33, what if the Ms has an additional 1 but the (Ms)² stays the same, can it be called transitive?