Almost balanced biased graph representations of frame matroids
نویسندگان
چکیده
منابع مشابه
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A nongraphic matroid M is said to be almost-graphic if, for all elements e, either M\e or M/e is graphic. We determine completely the class of almost-graphic matroids, thereby answering a question posed by Oxley in his book “Matroid Theory.” A nonregular matroid is said to be almost-regular if, for all elements e, either M\e or M/e is regular. An element e for which both M\e and M/e are regular...
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ژورنال
عنوان ژورنال: Advances in Applied Mathematics
سال: 2018
ISSN: 0196-8858
DOI: 10.1016/j.aam.2017.12.003