Petersburg, home of the famous mathematician Leonard Euler. Lucky for them, Königsberg was not too far from St. Even though none of the citizens of Königsberg could invent a route that would allow them to cross each of the bridges only once, still they could not prove that it was impossible. While walking, the people of the city decided to create a game for themselves, their goal being to devise a way in which they could walk around the city, crossing each of the seven bridges only once. According to lore, the citizens of Königsberg used to spend Sunday afternoons walking around their beautiful city. The seven bridges were called Blacksmith’s bridge, Connecting Bridge, Green Bridge, Merchant’s Bridge, Wooden Bridge, High Bridge, and Honey Bridge. Īs the river flowed around Kneiphof, literally meaning pub yard, and another island, it divided the city into four distinct regions. The healthy economy allowed the people of the city to build seven bridges across the river, most of which connected to the island of Kneiphof their locations can be seen in the accompanying picture.

Artwork from the eighteenth century shows Königsberg as a thriving city, where fleets of ships fill the Pregel, and their trade offers a comfortable lifestyle to both the local merchants and their families. In the Middle Ages, Königsberg became a very important city and trading center with its location strategically positioned on the river. In 1254, Teutonic knights founded the city of Königsberg under the lead of Bohemian King Ottoker II after their second crusade against the Prussians. Our story begins in the 18th century, in the quaint town of Königsberg, Prussia on the banks of the Pregel River. Leonard Euler's Solution to the Königsberg Bridge Problem Königsberg It is an example of the sort of historical research students can do using secondary sources. This report was counted towards 30% of the final grade.

This was a 3-credit introductory course in the History of Mathematics. The following student research report was prepared for Professor Judit Kardos' Math 255 class, held at The College of New Jersey.

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