From 697a15af336b132897d137a3a6d6a0325a0c3b66 Mon Sep 17 00:00:00 2001 From: Simon Browne Date: Fri, 12 Apr 2019 19:01:10 +0200 Subject: [PATCH] fixed broken internal link --- pages/beetroot_to_ciao.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/pages/beetroot_to_ciao.html b/pages/beetroot_to_ciao.html index fb46178..e667af6 100644 --- a/pages/beetroot_to_ciao.html +++ b/pages/beetroot_to_ciao.html @@ -14,7 +14,7 @@

The Seven Bridges of Königsberg is a historical mathematical problem which laid the ground for graph theory, and prefigured topology. Königsberg, in former Prussia (now Kaliningrad, Russia), set on both sides of the Pregel River, included two large islands - Kneiphof and Lomse - which were connected to the mainland by a series of seven bridges. The problem was to devise a walk through the city crossing each of those bridges once and only once.

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The negative solution came from Swiss mathematician and physicist Leonhard Euler, who pointed out that the choice of route inside each land mass was irrelevant; only the sequence of crossings mattered. Euler created a diagram in which each land mass was represented by a "vertex" or node, and each bridge became an "edge", or link between them. This allowed him to consider the problem in abstract terms, in the mathematical structure of a graph.

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The negative solution came from Swiss mathematician and physicist Leonhard Euler, who pointed out that the choice of route inside each land mass was irrelevant; only the sequence of crossings mattered. Euler created a diagram in which each land mass was represented by a "vertex" or node, and each bridge became an "edge", or link between them. This allowed him to consider the problem in abstract terms, in the mathematical structure of a graph.

As only the connection information is relevant, the shape of the pictorial representations can be distorted in any way without changing the graph. For example, it does not matter if the links drawn are straight or curved, or whether a node is to the left or right of another.