The problem of the Nile is a mathematical problem related to equal partitions of measures. The problem was first presented by Ronald Fisher in 1936–1938. It is presented by Dubins and Spanier in the following words: Formally, for each height h, there is a nonatomic measure vh on the land, which represents the land values when the height of the Nile is h. In general, there can be infinitely many different heights, and hence, infinitely many different measures. William Feller showed in 1938 that a solution for the general case might not exist.
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| - The problem of the Nile is a mathematical problem related to equal partitions of measures. The problem was first presented by Ronald Fisher in 1936–1938. It is presented by Dubins and Spanier in the following words: Formally, for each height h, there is a nonatomic measure vh on the land, which represents the land values when the height of the Nile is h. In general, there can be infinitely many different heights, and hence, infinitely many different measures. William Feller showed in 1938 that a solution for the general case might not exist. (en)
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| - The problem of the Nile is a mathematical problem related to equal partitions of measures. The problem was first presented by Ronald Fisher in 1936–1938. It is presented by Dubins and Spanier in the following words: "Each year, the Nile would flood, thereby irrigating or perhaps devastating parts of the agricultural land of a predynastic Egyptian village. The value of different portions of the land would depend upon the height of the flood. In question was the possibility of giving to each of the k residents, piece of land whose value would be 1/k of the total land value, no matter what the height of the flood." Formally, for each height h, there is a nonatomic measure vh on the land, which represents the land values when the height of the Nile is h. In general, there can be infinitely many different heights, and hence, infinitely many different measures. William Feller showed in 1938 that a solution for the general case might not exist. When the number of different heights (= measures) is finite, a solution always exists. This was first noted by Jerzy Neyman in 1946, and proved as a corollary of the Dubins–Spanier theorems in 1961. The problem in this case is called the exact division or consensus division problem. (en)
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