Results 1 to 5 of 5

Thread: Planar graph

  1. #1
    Member
    Joined
    Mar 2017
    From
    Annabay
    Posts
    198

    Planar graph

    Is the following graph planar? If not why? If yes draw a planar confi guration

    Planar graph-planar.png
    .Planar graph-55_0-1-.jpg
    its planar because when we stretch it out the edges don't cross over ..
    hers's my attempt .....
    Looks like a knights head....Is this ok ?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Nov 2010
    Posts
    2,706
    Thanks
    1033

    Re: Planar graph

    No, you free a different graph. Check the degree of the vertex that has the loop.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor
    Joined
    Nov 2010
    Posts
    2,706
    Thanks
    1033

    Re: Planar graph

    Try moving the very center vertex to the upper right corner.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Aug 2017
    From
    Yeah onya
    Posts
    7
    Thanks
    4

    Re: Planar graph

    It's not planar. K₅ is sitting in that graph (after removing some edges and vertices).
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Member
    Joined
    Mar 2017
    From
    Annabay
    Posts
    198

    Re: Planar graph

    Thanks all..I'll work on these ..
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Planar graph
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: Aug 20th 2012, 11:43 PM
  2. Replies: 5
    Last Post: Dec 22nd 2010, 01:42 AM
  3. Planar graph
    Posted in the Discrete Math Forum
    Replies: 7
    Last Post: Jul 24th 2010, 07:21 AM
  4. is this graph planar?
    Posted in the Differential Geometry Forum
    Replies: 2
    Last Post: Mar 3rd 2010, 01:32 PM
  5. isomorphic graph, planar graph
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: May 9th 2009, 08:13 AM

/mathhelpforum @mathhelpforum