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Planar graphs / Four color theorem / Wolfgang Haken / Kenneth Appel / Reduction / Chordal graph / Five color theorem / Graph theory / Mathematics / Graph coloring


? Lm.u..C ___flEWe SOLUTION OF THE FOUR COLORPROBLEM
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Document Date: 2013-03-22 09:36:19

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York / Toronto / London / Selden / /

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Ames / /

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Canada / /

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USD / /

Facility

Iowa State University / University of Toronto / University of Illinois / University College / Institute of Mathematical Statistics / University of Wisconsin / /

IndustryTerm

computer search / draft algorithm / appropriate discharging algorithm / designed computer algorithms / /

Organization

pentagon / University of Illinois / American Statistical Association / Institute of Mathematical Statistics / Association of America / Biometric Society / Mathematics League / American MathematicaZ Society / Iowa State University / University of Toronto / University College / University of Wisconsin / /

Person

Wolfgang Haken / Martin Gardner / Branko Grunbaum / Lynn Arthur Steen / Kenneth Appel / LESTER R. FORD / Francis Guthrie / /

Position

STATISTICS LECTURERS The Visiting Lecturer / President / Visiting Lecturer / /

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Wisconsin / Illinois / New York / Iowa / /

PublishedMedium

Scientific American / the Bulletin / Mathematics Magazine / /

Technology

appropriate discharging algorithm / specially designed computer algorithms / discharging algorithm / draft algorithm / /

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