Bounds on the Chroma . Tic and Achromatic Numbers of Complimentary
نویسنده
چکیده
In the present note, exact upper bounds on the sums of chromatic and achromatic numbers of complimentary graphs are determined Which prove in particular a conjecture by Hedetniemi (1966) and imply a bound due to Nordhaus and Gaddum (1956).
منابع مشابه
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تاریخ انتشار 1969