Mathematics – General Mathematics
Scientific paper
2010-10-19
Mathematics
General Mathematics
In this version, the first part gives a proof to four color theorem which depends properties of planar graph. But by using res
Scientific paper
In this paper, we give a proof for four color theorem(four color conjecture). More important is that it does not involve computer assistance and can be generalized to prove Hadwiger Conjecture. Also an algorithm to color every planar graph using no more than 5 colors can be deduced from the proof. The newest part discusses outplanar graph and one kind of graph with interesting shape is discussed.
Cao Weiwei
Yue Weiya
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