Overlap matrices and total imbedding distributions. On the average genus of a graph. Kuratowski-type theorems for average genus. Limit points for average genus. 2-connected nonsimplicial graphs.
Limit points for average genus.
Local extrema in genus-stratified graphs. Genus distributions for bouquets of circles. Genus distributions for two first classes of graphs. Hierarchy for imbedding-distribution invariants of a graph. Wrapped coverings and their realizations.