| K. Appel and W. Haken. Every planar map is four colorable. Illinois J. Math, 21:429--567, 1977. |
....with four or fewer colors (i.e. labels) so that no two adjacent regions get the same color; two regions are adjacent if they share a common boundary curve. This famous theorem, first conjectured in 1852 and proved at last in 1976, would seem to already have a solution in the sense of a proof [4], 36] However, for reasons outlined below, the existing results are not fully satisfactory. The Four Color Theorem appears to be a statement about the topological properties of the plane but on deeper study it reveals aspects that are of different dimensionality. While seemingly about the ....
....governs the phenomena they study. This would be important since it is known that quantum computation based on a nonlinear model can achieve polynomial solutions to NP complete problems. 5 Coloring as a test problem The four color theorem was originally proved by Appel, Haken and Koch [2] 3] [4] using a combination of traditional mathematics and computer implemented calculations. Though their work depended on some heuristic innovations by Heesch [11] its broad outline is basically as suggested by Birkhoff [7] 60 years earlier. A set of unavoidable configurations is generated so that ....
K. Appel and W. Haken, Every planar map is four colorable, Contemporary Math. 98 (1989) entire issue.
....by Delta. Theorem 1 Let A be a particular complex number and let I be the Jones Wenzl idempotent element in the Temperley Lieb algebra with parameter A. Then Delta(I = n 1] q ; where q = A . Thus, there is an interesting possible choice for integer representation. For example, [3] A = 1 (A ) e 1 ; where as above denotes addition in the algebra and is scalar multiplication. 7 I believe that one could use unitary evolution operators to produce the required qubit topologies. However, any implementation of quantum computing via such abstract ....
....governs the phenomena they study. This would be important since it is known that quantum computation based on a nonlinear model can achieve polynomial solutions to NP complete problems. 5 Coloring as a test problem The four color theorem was originally proved by Appel, Haken and Koch [2] [3], 4] using a combination of traditional mathematics and computer implemented calculations. Though their work depended on some heuristic innovations by Heesch [11] its broad outline is basically as suggested by Birkhoff [7] 60 years earlier. A set of unavoidable configurations is generated so ....
K. Appel, W. Haken and J. Koch, Every planar map is four colorable. Part II. Reducibility, Illinois J. Math. 21 (1977), 491--567.
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K. Appel and W. Haken. Every planar map is four colorable. Illinois J. Math, 21:429--567, 1977.
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K. Appel and W. Haken. 1976. Every Planar Map is Four Colorable. Bulletin American Math Society,Vol 82, pp. 711-712.
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K. Appel and W. Haken. Every planar map is four colorable. Part ii. Reducibility. Illinois J. Math., 21:491--567, 1977.
No context found.
K. Appel and W. Haken. Every planar map is four colorable. Part i. Discharging. Illinois J. Math., 21:429--490, 1977.
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K. Appel, W. Haken, and J. Koch, Every planar map is four colorable. II. Reducibility. Illinois J. Math., 21(3):491-567, 1977.
No context found.
K. Appel and W. Haken, Every planar map is four colorable. I. Discharging. Illinois J. Math., 21(3):429-490, 1977.
No context found.
K. Appel, W. Haken, and J. Koch, Every planar map is four colorable. II. Reducibility. Illinois J. Math., 21(3):491-567, 1977.
No context found.
K. Appel and W. Haken, Every planar map is four colorable. I. Discharging. Illinois J. Math., 21(3):429-490, 1977.
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K. Appel, W. Hakenn, and J. Koch. Every planar map is four colorable. Part II. Reducibility. Illinois Journal of Mathematics, 21:491--597, 1977.
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K. Appel and W. Haken. Every planar map is four colorable. Part I. Discharging. Illinois Journal of Mathematics, 21:429--490, 1977.
No context found.
K. Appel, W. Haken, and J. Koch, Every planar map is four colorable. II. Reducibility. Illinois J. Math., 21(3):491-567, 1977.
No context found.
K. Appel and W. Haken, Every planar map is four colorable. I. Discharging. Illinois J. Math., 21(3):429-490, 1977.
No context found.
K. Appel and W. Haken, Every planar map is four colorable, AMS Contemporary Mathematics, 98, Amer. Math. Soc., Providence, RI, 1989.
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K. Appel, W. Haken and J. Koch, Every planar map is four colorable. Part II. Reducibility, Illinois J Mathematics, 21 (1977), 491--567.
No context found.
K. Appel and W. Haken, Every planar map is four colorable. Part I. Discharging, Illinois J Mathematics, 21 (1977), 429--490.
No context found.
Ken Appel and Wolfgang Haken, Every planar map is four-colorable, Bull. Amer. Math. Soc. 82 (1976), 711-712.
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K. Appel and W. Haken, Every Planar Map is Four Colorable, Amer. Math. Soc., Providence, R.I., 1989, 741 p.
No context found.
K. Appel, W. Haken, and J. Koch, Every planar map is four colorable. Part II: Reducibility, Illinois J. Math., 21 (1977), pp. 491--567.
No context found.
K. Appel and W. Haken, Every planar map is four colorable. Part I: Discharging, Illinois J. Math., 21 (1977), pp. 429--490.
No context found.
K. Appel and W. Haken, Every planar map is four colorable, Bull. Amer. Math. Soc., 82 (1976), pp. 711--712.
No context found.
Ken Appel and Wolfgang Haken, Every planar map is four-colorable, Bull. Amer. Math. Soc. 82 (1976), 711-712.
No context found.
K. Appel, W. Haken, and J. Koch, Every planar map is four colorable. II. Reducibility. Illinois J. Math., 21(3):491-567, 1977.
No context found.
K. Appel and W. Haken, Every planar map is four colorable. I. Discharging. Illinois J. Math., 21(3):429-490, 1977.
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