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The **Berlin Papyrus 6619**, simply called the **Berlin Papyrus** when the context makes it clear,^{[1]} is one of the primary sources of ancient Egyptian mathematics.^{[2]} One of the two mathematics problems on the Papyrus may suggest that the ancient Egyptians knew the Pythagorean theorem.

The Berlin Papyrus 6619 is an ancient Egyptian papyrus document from the Middle Kingdom,^{[3]} second half of the 12th (c. 1990–1800 BC) or 13th Dynasty (c. 1800 BC – 1649 BC).^{[4]} The two readable fragments were published by Hans Schack-Schackenburg in 1900 and 1902.^{[5]}

The Berlin Papyrus contains two problems, the first stated as "the area of a square of 100 is equal to that of two smaller squares. The side of one is ½ + ¼ the side of the other."^{[6]} The interest in the question may suggest some knowledge of the Pythagorean theorem, though the papyrus only shows a straightforward solution to a single second degree equation in one unknown. In modern terms, the simultaneous equations *x*^{2} + *y*^{2} = 100 and *x* = (3/4)*y* reduce to the single equation in *y*: ((3/4)*y*)^{2} + *y*^{2} = 100, giving the solution *y* = 8 and *x* = 6.

**^**Lumpkin, Beatrice (2004). "The Mathematical Legacy of Ancient Egypt - A Response to Robert Palter". National Science Foundation: 17. CiteSeerX 10.1.1.372.5877.`{{cite journal}}`

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(help)**^**Williams, Scott, Egyptian Mathematical Papyri, SUNY-Buffalo**^**Corinna Rossi,*Architecture and Mathematics in Ancient Egypt*, Cambridge University Press 2004, p.217**^**Marshall Clagett, Ancient Egyptian Science, Vol 3, 1999 [1], p.249.**^**Schack-Schackenburg, Hans (1900), "Der Berliner Papyrus 6619",*Zeitschrift für ägyptische Sprache und Altertumskunde*(in German),**38**: 135–140, doi:10.1524/zaes.1900.38.jg.135, S2CID 193647129 (vol. 36-39, pages 506–514),

Schack-Schackenburg, Hans (1902), "Das kleinere Fragment des Berliner Papyrus 6619",*Zeitschrift für ägyptische Sprache und Altertumskunde*(in German),**40**: 65–66, doi:10.1515/zaes-1902-0109, S2CID 193570611.**^**Richard J. Gillings,*Mathematics in the Time of the Pharaohs*, Dover, New York, 1982, 161.

- Simultaneous equation examples from the Berlin papyrus
- Two algebra problems compared to RMP algebra
- Two suggested solutions