Strongly Connected Directed Graphs | Graph Theory, Digraph Theory

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  • čas přidán 19. 05. 2024
  • What are strongly connected digraphs? That's what we'll be going over in today's graph theory lesson. We'll recap connectedness, what it means to be weakly connected, and then finish off with the definition of strongly connected!
    We say a directed graph D is strongly connected if, for every pair of vertices u and v in D, there is a u-v path and a v-u path, where the "paths" are directed. In other words, a directed graph D is strongly connected if every vertex is reachable from any other vertex.
    Lesson on Connected graphs: www.youtube.com/watch?cv=z9cT...
    Lesson on weakly connected digraphs: • Weakly Connected Direc...
    Lesson on underlying graphs: • Underlying Graphs of D...
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    I hope you find this video helpful, and be sure to ask any questions down in the comments!
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Komentáře • 71

  • @tskarthikeyan5648
    @tskarthikeyan5648 Před 2 lety +4

    Awesome video cleared my doubt on the difference between a strongly connected graph and a connected graph.😊

  • @149sarangrathi7
    @149sarangrathi7 Před rokem +3

    Wrath of math is the best channel for mathematics videos on CZcams.. This playlist on graph theory helped me a lot sir.. Thank u so much 😇❣️

  • @mohammadsami3734
    @mohammadsami3734 Před rokem +1

    Had lot of Confusion b/w Weakly and Strongly connected graphs..
    Now, Crystal Clear
    Thanks for the Video.. ❤

  • @tamim8540
    @tamim8540 Před 2 lety +1

    The best graph theory playlist.

    • @WrathofMath
      @WrathofMath  Před 2 lety +1

      Thanks Tamim, I really appreciate that! So glad it has been useful for you!

  • @SimratDeol20
    @SimratDeol20 Před 2 lety +5

    Binge watching the graph theory playlist because it makes more sense than my teacher binging topics at the speed of light. Thank you so much sir, your videos have been a great help. 🙌

    • @WrathofMath
      @WrathofMath  Před 2 lety +2

      Thank you for watching Simrat, so glad the lessons have been helpful! Been working on more graph theory lessons lately - let me know if you ever have any video requests, still a lot of work to do before the playlist is complete!

  • @himanshusingh5118
    @himanshusingh5118 Před 3 lety +1

    Thank you sir! I was very confused about this concept

    • @WrathofMath
      @WrathofMath  Před 3 lety

      So glad it helped! Thanks for watching, and check out my graph theory playlist if you're looking for more! czcams.com/play/PLztBpqftvzxXBhbYxoaZJmnZF6AUQr1mH.html

  • @SomeoneSomewhere101
    @SomeoneSomewhere101 Před 7 měsíci

    Ty very much, ur explanation is clear and to the point.

  • @dulcedelgado8594
    @dulcedelgado8594 Před 2 lety

    Your videos are awesome!

  • @bradyloenhart8607
    @bradyloenhart8607 Před 3 lety

    Great video, thanks man!

  • @gabiryoussef9194
    @gabiryoussef9194 Před rokem

    This was very useful. many thanks for your effort

  • @CHAOSTECH
    @CHAOSTECH Před 3 lety +1

    Thank you! This really helped me

    • @WrathofMath
      @WrathofMath  Před 3 lety +1

      I'm glad to hear it! You're welcome and thanks for watching!

  • @WesleyCraig93
    @WesleyCraig93 Před 24 dny

    "No hurricane or power outage is going to stop the math" - let's goooo

  • @sahasransubrahma379
    @sahasransubrahma379 Před 3 lety

    thank you sir.it helped me a lot in lockdown time

    • @WrathofMath
      @WrathofMath  Před 3 lety

      You're welcome! I'm glad it helped and thanks for watching!

  • @barborasharrock7076
    @barborasharrock7076 Před 3 lety +3

    Thanks for the hard work and effort you put into all your videos! Rain or shine indeed lol

    • @WrathofMath
      @WrathofMath  Před 3 lety +1

      It's my pleasure, thanks for your support, Barbora!

  • @mariyamsanayam1867
    @mariyamsanayam1867 Před 3 lety

    Thank you sir..Great work

  • @kenilpatel7841
    @kenilpatel7841 Před 3 lety +1

    Really great video! :)

    • @WrathofMath
      @WrathofMath  Před 3 lety +1

      Thanks, Kenil! Be sure to check out my graph theory playlist if you're looking for more lessons on the subject! czcams.com/play/PLztBpqftvzxXBhbYxoaZJmnZF6AUQr1mH.html It currently doesn't have a ton of material on directed graphs, but more is coming!

  • @souravde6116
    @souravde6116 Před 2 lety

    How to define graph connectivity of a directed graph? Ho do we define the directed graph is k-connected? And what would be the definition of vertex disjoint of a directed graph?

  • @sarahomer7852
    @sarahomer7852 Před 3 lety

    can you make a triple itegral video :( finding the bounds of integration in particular

  • @tunamusic2314
    @tunamusic2314 Před 3 lety

    can i get the name of the song at the end of vid, bro ?

  • @Sebastian1832x
    @Sebastian1832x Před rokem

    Thank you 😊

  • @nabilafathima3223
    @nabilafathima3223 Před 3 lety

    Can you explain what is condensation of a digraph?

  • @hadjergr
    @hadjergr Před 3 lety

    thank you so much

  • @upendrakumarmummadi9989

    Excellent sir

  • @yathishcollege9529
    @yathishcollege9529 Před 3 lety

    thanks you so much sir

    • @WrathofMath
      @WrathofMath  Před 3 lety

      You're very welcome! Thanks for watching and check out my graph theory playlist if you're looking for more: czcams.com/play/PLztBpqftvzxXBhbYxoaZJmnZF6AUQr1mH.html
      Many more lessons on the way!

  • @syedrizvi2687
    @syedrizvi2687 Před 2 lety

    Thank you :D

    • @WrathofMath
      @WrathofMath  Před 2 lety

      My pleasure, thanks for watching! If you're looking for more graph theory, check out my playlist: czcams.com/play/PLztBpqftvzxWo4HxUYV58ENhxHV32Wxli.html

  • @KavitaDevi-ko4so
    @KavitaDevi-ko4so Před 3 lety

    Can you make a video on ramanujan summation which states that sum of all real numbers is
    1 + 2 + 3 + 4 + 5 ... = - 1/12

  • @BORN2WINB2W
    @BORN2WINB2W Před 3 lety

    Thanks a lot 😍

    • @WrathofMath
      @WrathofMath  Před 3 lety

      No problem, thanks for watching! Check out my graph theory playlist if you're looking for more! czcams.com/play/PLztBpqftvzxXBhbYxoaZJmnZF6AUQr1mH.html

  • @allisonchinguru6148
    @allisonchinguru6148 Před 5 měsíci

    thank u so much

  • @kristelpagod4683
    @kristelpagod4683 Před 3 lety

    Sir how you do that can you tell me

  • @krishorepalanati7980
    @krishorepalanati7980 Před 3 lety

    Sir I am understanding lesson very fast learner by your channel

    • @WrathofMath
      @WrathofMath  Před 3 lety +1

      So glad to hear it, thanks for watching! :)

    • @krishorepalanati7980
      @krishorepalanati7980 Před 3 lety +1

      @@WrathofMath sir please start inequalities chapter

    • @WrathofMath
      @WrathofMath  Před 3 lety

      I'd be happy to help, could you be more specific? What about inequalities would you like to learn? I already have a handful of lessons on graphing them and other things, but would be happy to do some more lessons on them if you have a specific topic in mind!

    • @krishorepalanati7980
      @krishorepalanati7980 Před 3 lety

      @@WrathofMath sir I am want if xbelongs to (2,5) then1/X belongs to

    • @krishorepalanati7980
      @krishorepalanati7980 Před 3 lety

      @@WrathofMath IAM sorry for late response

  • @mohammedthaier1718
    @mohammedthaier1718 Před 3 lety

    Good job

    • @WrathofMath
      @WrathofMath  Před 3 lety +1

      Thank you, Mohammed!

    • @mohammedthaier1718
      @mohammedthaier1718 Před 3 lety

      @@WrathofMath Your lessons are simple, clear, and well explained
      I'm studying some mathematics for algorithms while watching them, keep going sir.

  • @kristelpagod4683
    @kristelpagod4683 Před 3 lety

    Me too sir thank u

  • @drayalec2928
    @drayalec2928 Před 3 lety

    Ur a legend

    • @WrathofMath
      @WrathofMath  Před 3 lety

      I do my best! Thanks for watching and let me know if you ever have any questions!

  • @ashirbadbehera1139
    @ashirbadbehera1139 Před 2 lety

    Please make a lesson on tournaments in graph theory.

    • @WrathofMath
      @WrathofMath  Před 2 lety

      Good idea, I have been meaning to do that for quite a while!

    • @WrathofMath
      @WrathofMath  Před 2 lety

      I've got more coming, but here is the intro lesson - hope you like it! czcams.com/video/LOFAR1SIqno/video.html

  • @vartikasingh9618
    @vartikasingh9618 Před 3 lety +1

    Matrix tree computation

  • @hardikanand6153
    @hardikanand6153 Před 2 lety

    what do you mean by a k-connected directed graph?
    Give an example

    • @WrathofMath
      @WrathofMath  Před 2 lety

      Thanks for watching! I would mean a directed graph that is strongly connected and can only be made not so by removing at least k vertices. If D is a digraph and removing any four vertices of D still leaves it strongly connected, then D is 4-connected, and by definition it is also 3-connected, 2-connected, 1-connected, and 0-connected. It may also be 5-connected, but I haven't provided information to conclude that.

    • @hardikanand6153
      @hardikanand6153 Před 2 lety

      @@WrathofMath Thanks bro for answering. I had one more doubt Can you please answer? The doubt is : What is the difference between a minimum spanning tree and a minimal spanning tree of a graph?

  • @user-rg1ii5lo5f
    @user-rg1ii5lo5f Před 4 měsíci

    Gr8

  • @dulcedelgado8594
    @dulcedelgado8594 Před 2 lety

    Your videos are awesome!

    • @WrathofMath
      @WrathofMath  Před 2 lety

      Thank you! My biggest video yet comes out next Tuesday, it's not a very mathy video - but it's a lot of fun!