Analysis of information sources in references of the Wikipedia article "Number theory" in English language version.
[36] Now there is a pregnant woman whose age is 29. If the gestation period is 9 months, determine the sex of the unborn child. Answer: Male.
Method: Put down 49, add the gestation period and subtract the age. From the remainder take away 1 representing the heaven, 2 the earth, 3 the man, 4 the four seasons, 5 the five phases, 6 the six pitch-pipes, 7 the seven stars [of the Dipper], 8 the eight winds, and 9 the nine divisions [of China under Yu the Great]. If the remainder is odd, [the sex] is male and if the remainder is even, [the sex] is female.
This is the last problem in Sunzi's otherwise matter-of-fact treatise.
Lam, Lay Yong; Ang, Tian Se (2004). Fleeting Footsteps: Tracing the Conception of Arithmetic and Algebra in Ancient China (revised ed.). Singapore: World Scientific. ISBN 978-981-238-696-0. Retrieved 2016-02-28.No one has yet discovered any warlike purpose to be served by the theory of numbers or relativity, and it seems unlikely that anyone will do so for many years.
[...] the question "how was the tablet calculated?" does not have to have the same answer as the question "what problems does the tablet set?" The first can be answered most satisfactorily by reciprocal pairs, as first suggested half a century ago, and the second by some sort of right-triangle problems (Robson 2001, p. 202).
Robson takes issue with the notion that the scribe who produced Plimpton 322 (who had to "work for a living", and would not have belonged to a "leisured middle class") could have been motivated by his own "idle curiosity" in the absence of a "market for new mathematics".(Robson 2001, pp. 199–200)
Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21.[...] the question "how was the tablet calculated?" does not have to have the same answer as the question "what problems does the tablet set?" The first can be answered most satisfactorily by reciprocal pairs, as first suggested half a century ago, and the second by some sort of right-triangle problems (Robson 2001, p. 202).
Robson takes issue with the notion that the scribe who produced Plimpton 322 (who had to "work for a living", and would not have belonged to a "leisured middle class") could have been motivated by his own "idle curiosity" in the absence of a "market for new mathematics".(Robson 2001, pp. 199–200)
Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21.[...] the question "how was the tablet calculated?" does not have to have the same answer as the question "what problems does the tablet set?" The first can be answered most satisfactorily by reciprocal pairs, as first suggested half a century ago, and the second by some sort of right-triangle problems (Robson 2001, p. 202).
Robson takes issue with the notion that the scribe who produced Plimpton 322 (who had to "work for a living", and would not have belonged to a "leisured middle class") could have been motivated by his own "idle curiosity" in the absence of a "market for new mathematics".(Robson 2001, pp. 199–200)
Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21. Robson, Eleanor (2001). "Neither Sherlock Holmes nor Babylon: a Reassessment of Plimpton 322" (PDF). Historia Mathematica. 28 (3): 167–206. doi:10.1006/hmat.2001.2317. Archived from the original (PDF) on 2014-10-21.No one has yet discovered any warlike purpose to be served by the theory of numbers or relativity, and it seems unlikely that anyone will do so for many years.