VASCONCELOS, J. E. S.; http://lattes.cnpq.br/4671065661357559; VASCONCELOS, José Eder Salvador de. (BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM MATEMÁTICAUFCGUniversidade Federal de Campina Grande, 2009-11)
The number of disjoint cocircuits in a matroid is bounded by its rank. There are,
however, matroids of rank arbitrarily large that do not contain two disjoint cocircuits.
Consider, for example,M(kn) andUn,2n. Moreover, ...