On the history of graph theory. Origin
... starry sky:
— just a drawing of stars — a graph without edges;
— asterisms and arrangements of stars of constellations can be both “minimal“ trees and graphs with cycles;
— figures and regions of constellations in the starry sky are hypergraphs.
The authors proposed the year 1542 as the year of the probable appearance of the Konigsberg bridges problem. The authors believe that the first report on graph theory was made by Leonhard Euler in 1735 at a Conference of the St. Petersburg ...