"Longomontanus proved to be the ideal assistant to Brahe and took over much of his work after he died. Although Brahe had made careful and complete observations, it remained for Longomontanus to present them in this treatise as an integrated system. This work, although based on the erroneous Tychonic theory, was very well accepted and was reprinted in 1640 and 1663.
"It is of particular significance that the work contains numerous tables calculated by the method of prosthaphaeresis (here called prosthaphaereseon). Prosthaphaeresis, (from the Greek words for addition and subtraction) is one of the standard computational shortcuts in use before the invention of logarithms" (Tomash & Williams).
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