mathematical-structure public under concept 1247 List Picture As a command %3 n0 mathematical-structure n2 algebraic-structure n0->n2 n3 banach-space n0->n3 n4 mathematical-graph n0->n4 n5 matrix n0->n5 n6 partially-ordered-set n0->n6 n7 topological-space n0->n7 n8 hypergraph n0->n8 n9 mathematical-category n0->n9 n10 matroid n0->n10 n1 concept n1->n0