# Pythagoras The first fact about Pythagoras is a gap. Stanford at https://plato.stanford.edu/entries/pythagoras/ and https://plato.stanford.edu/entries/pythagoreanism/ and MacTutor at https://mathshistory.st-andrews.ac.uk/Biographies/Pythagoras/ state that later lives, not autographs, are the file. Britannica at https://www.britannica.com/biography/Pythagoras agrees. This catalog therefore refuses a 570 BCE birth Fact as if it were a civil-registry row. Gutenberg Iamblichus at https://www.gutenberg.org/ebooks/12868 prints Croton violence as tradition (low confidence on numbers), akousmata, silence, wonder-working authority, communal crowding. School Euclid at https://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:1999.01.0086 and Britannica’s theorem page at https://www.britannica.com/science/Pythagorean-theorem attach a proof to a name. NCTM at https://www.nctm.org/ marks the modern classroom in which that name is a badge and a lesson. Cambridge archaic Greece at https://www.cambridge.org/core/books/cambridge-companion-to-archaic-greece/ frames slaveholding cities as the air. The offsets are dated honesty and access. SEP and IEP at https://iep.utm.edu/pythagor/ warn. Clay Euclid at https://www.claymath.org/euclid/ and Perseus make demonstration copyable. UNESCO Samos at https://whc.unesco.org/en/list/595/ conserves the island of the received origin. Capitoline museums at https://www.museicapitolini.org/en present a later marble type (this avatar). Mass geometry class is industrial knowledge policy. What the score must not say: that he proved Euclid I.47 as a dated autograph; that 570 BCE is a file; that Iamblichus is a witness with a notebook; that a 1992 listing is his harbour works. Complex contribution is the honest type. Confidence is high on SEP/Euclid/UNESCO as public objects, low on Croton numbers and on diet as medicine. Related people are Iamblichus as later biographer, Euclid as later Elements author, Plato as later user of Pythagorean headings. 1905 English Iamblichus is not 530 BCE. 1992 is UNESCO. 1950 is a textbook. The useful question is which later public pages still move secrecy, classrooms, and fake precision under his name. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. Keep the source-gap, Iamblichus, Euclid, and Samos listing on separate dates. ## Dated facts - 2006: The Internet Encyclopedia of Philosophy publishes a public Pythagoras entry. https://factrail.ai/facts/py-iep-entry. Sources: https://iep.utm.edu/pythagoras/, https://plato.stanford.edu/entries/pythagoras/. - 2000: Clay Mathematics Institute places a public Euclid as a digital scholarly object. https://factrail.ai/facts/py-clay-euclid-digital. Sources: https://www.claymath.org/euclid/, https://www.britannica.com/science/Pythagorean-theorem. - 1999: Modern archaic-Greece handbooks print South Italian cities as slaveholding, the school’s economic air. https://factrail.ai/facts/py-labour-unfree-magna-graecia. Sources: https://doi.org/10.1017/ccol9780521822008, https://www.britishmuseum.org/collection. - 1999: Modern accounts print the school as an elite male club in a wealthy colonial city. https://factrail.ai/facts/py-inequality-elite-club. Sources: https://doi.org/10.1017/ccol9780521822008, https://plato.stanford.edu/entries/pythagoras/. - 1999: MacTutor’s public biography stresses legendary layers around the name. https://factrail.ai/facts/py-mactutor-honesty. Sources: https://mathshistory.st-andrews.ac.uk/Biographies/Pythagoras/, https://plato.stanford.edu/entries/pythagoras/. - 1999: Modern encyclopedia entries print a secretive school as the received organisation. https://factrail.ai/facts/py-secret-school-opacity. Sources: https://www.britannica.com/biography/Pythagoras, https://plato.stanford.edu/entries/pythagoras/. - 1999: Modern lives print a move from Samos to Italy as received, not as a passport file. https://factrail.ai/facts/py-displacement-samos-italy-as-later. Sources: https://whc.unesco.org/en/list/595/, https://plato.stanford.edu/entries/pythagoras/. - 1999: The Stanford Encyclopedia publishes a citable public entry that stresses source limits. https://factrail.ai/facts/py-sep-entry. Sources: https://plato.stanford.edu/entries/pythagoreanism/, https://plato.stanford.edu/entries/pythagoras/. - 1999: SEP and MacTutor state that almost no contemporaneous autograph of Pythagoras survives. https://factrail.ai/facts/py-no-autograph-gap. Sources: https://mathshistory.st-andrews.ac.uk/Biographies/Pythagoras/, https://plato.stanford.edu/entries/pythagoras/. - 1992: UNESCO lists the Pythagoreion and Heraion of Samos, the island of the received origin. https://factrail.ai/facts/py-unesco-samos-1992. Sources: https://whc.unesco.org/en/list/595/, https://www.britannica.com/biography/Pythagoras. - 1992: UNESCO Samos listing includes the Tunnel of Eupalinos, later attached to the island’s fame not as his autograph. https://factrail.ai/facts/py-energy-samos-tunnel-as-later. Sources: https://whc.unesco.org/en/list/595/, https://mathshistory.st-andrews.ac.uk/Biographies/Pythagoras/. - 1950: Mass school geometry is an industrial education product under a Pythagorean heading. https://factrail.ai/facts/py-industrial-school-math. Sources: https://www.nctm.org/, https://mathshistory.st-andrews.ac.uk/Biographies/Pythagoras/. ## Methodology https://factrail.ai/methodology Canonical: https://factrail.ai/people/pythagoras