The Seven Bridges of Königsberg problem was solved by Leonhard Euler, and his solution is considered the origin of graph theory.
Notes on verification
Well-documented historical mathematical fact, confirmed by multiple independent sources including Wikipedia, academic references, and Euler's original work.
Sources
- List of mathematics history topics (en.wikipedia.org)
- https://arxiv.org/pdf/cond-mat/0602129 (arxiv.org)
- https://mathworld.wolfram.com/KoenigsbergBridgeProblem.html (mathworld.wolfram.com)
- https://britannica.com/science/Konigsberg-bridge-problem (britannica.com)
- https://historyofinformation.com/detail.php?id=3406 (historyofinformation.com)
- https://www.cantab.net/users/michael.behrend/repubs/maze_maths/pages/euler_en.html (cantab.net)