A mathematician, statistician and computer scientist who worked in combinatorics and graph theory.[ref]
https://mathshistory.st-andrews.ac.uk/Biographies/Kruskal_Joseph/. MacTutor, full name, Quick Info and Summary; last updated October 2013
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Joseph Kruskal is a prominent American mathematician known for his contributions to mathematics, particularly in the fields of statistics and graph theory. He is perhaps best known for developing the Kruskal's algorithm, which is a method for finding the minimum spanning tree of a connected, undirected graph. This algorithm is widely used in computer science and operations research for network design and optimization problems. Kruskal received his Ph.D.