Books authored by Faculty of the Department of Mathematics University of Illinois at Urbana–Champaign 1953–present Appel, Kenneth (with Haken, Wolfgang) Every planar map is four colorable. With the collaboration of J

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Date: 2014-02-13 11:31:45 Ring theory Ring Srinivasa Ramanujan Commutative algebra Leroy P. Steele Prize Mathematics Abstract algebra Number theorists		Books authored by Faculty of the Department of Mathematics University of Illinois at Urbana–Champaign 1953–present Appel, Kenneth (with Haken, Wolfgang) Every planar map is four colorable. With the collaboration of J Add to Reading List Source URL: www.math.illinois.edu Download Document from Source Website File Size: 81,00 KB Share Document on Facebook