On the history of graph theory. Origin
... 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 Academy of Sciences and is devoted to the Konigsberg bridges problem. The authors believe that the first ...
Russian military engineers in the Prussian campaign of 1757— 1762
... chord of the military engineers activity was ensuring withdrawal of Russian troops from Eastern Prussia in August 1762.
Seven Years’ War, Prussia, Prussian province, Russian military engineers, defensive structures, fortresses, bridges, crossings