Tag Archives: coloring maps

How nice is Docker?


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Four color theorem: experimenting impasses (as in life)


I still think a solution may be found in Kempe chain color swapping … for maps without F2, F3 and F4 faces (or even without this restriction). Or at least I want to try. How you can solve the impasses … Continue reading

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Four color theorem: work in progress


šŸ˜¦ Too many more things to do and little time: Filter out duplicates. I finally found a java library to efficiently filter out all isomorphic graphs. It is a library part if theĀ sspace project. Using it I will be able … Continue reading

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Four color theorem: Cahit spiral chains (step two)


Now the application is able to find all spiral chains of a graph. I still need to: Implement the Cahit coloring algorithm using the spiral chains Add some additional features to the Java application Modify the settings to color the … Continue reading

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Four color theorem: videos


Four videos for the four color theorem. music coloring algorithm slow motion maps java application features

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Four color theorem: other representations of maps


Here are some new representation of graphs: Thanks to: http://mathoverflow.net/questions/63861/representations-of-regular-maps-four-color-theorem http://www.geogebra.org/forum/viewtopic.php?f=2&t=21841

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Four color theorem: representations of maps


For the scope of the four color problem and without lack of generality, maps can be represented in different ways. This is generally done to have a different perspective on the problem. For example, the graph-theoretic representation of maps has … Continue reading

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