Browsing Matemātikas un informātikas institūts / Institute of Mathematics and Computer Science by Subject "chromatic critical graphs"
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On building 4-critical plane and projective plane multiwheels from odd wheels
(2013-01-31)We build unbounded classes of plane and projective plane multiwheels that are 4-critical that are received summing odd wheels as edge sums modulo two. These classes can be considered as ascending from a single common graph ...