Archive for January, 2010

During a conference at our institute in honor of Prof. C R Rao’s 90th birthday celebrations,  Prof. K R Parthasarathy asked me if I had read the proof of four colour theorem (4CT). I said I know the idea behind it and the general outline. He told me that that is not enough.  A good part of graph theory was developed due to 4CT, it is essential that one understands its proof. He says that is how one can build the necessary muscle power. Who am I to say no? So I start out the mammoth task of trying to understand the proof of 4CT.  I am keeping 3 months for the same and if  it does not go well, I plan to try to prove it from the scratch :).

There are some interesting problems that I happen to come across during the conference, which I will post here soon.

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