LEADER 03009nam 22004335a 450 001 9910153615103321 005 20091109150325.0 010 $a3-03719-559-2 024 70$a10.4171/059 035 $a(CKB)3710000000962490 035 $a(CH-001817-3)94-091109 035 $a(PPN)17815556X 035 $a(EXLCZ)993710000000962490 100 $a20091109j20081201 fy 0 101 0 $aeng 135 $aurnn|mmmmamaa 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aThomas Harriot's Doctrine of Triangular Numbers: the 'Magisteria Magna'$b[electronic resource] /$fJanet Beery, Jacqueline Stedall 210 3 $aZuerich, Switzerland $cEuropean Mathematical Society Publishing House$d2008 215 $a1 online resource (144 pages) 225 0 $aHeritage of European Mathematics (HEM) ;$x2523-5214 330 $aThomas Harriot (c.?1560-1621) was a mathematician and astronomer, known not only for his work in algebra and geometry, but also for his wide-ranging interests in ballistics, navigation, and optics (he discovered the sine law of refraction now known as Snell's law). By about 1614, Harriot had developed finite difference interpolation methods for navigational tables. In 1618 (or slightly later) he composed a treatise entitled 'De numeris triangularibus et inde de progressionibus arithmeticis, Magisteria magna', in which he derived symbolic interpolation formulae and showed how to use them. This treatise was never published and is here reproduced for the first time. Commentary has been added to help the reader to follow Harriot's beautiful but almost completely nonverbal presentation. The introductory essay preceding the treatise gives an overview of the contents of the 'Magisteria' and describes its influence on Harriot's contemporaries and successors over the next sixty years. Harriot's method was not superseded until Newton, apparently independently, made a similar discovery in the 1660s. The ideas in the 'Magisteria' were spread primarily through personal communication and unpublished manuscripts, and so, quite apart from their intrinsic mathematical interest, their survival in England during the seventeenth century provides an important case study in the dissemination of mathematics through informal networks of friends and acquaintances. 517 $aThomas Harriot's Doctrine of Triangular Numbers 517 $aThomas Harriot's Doctrine of Triangular Numbers 517 $aThomas Harriot?s Doctrine of Triangular Numbers 606 $aHistory of mathematics$2bicssc 606 $aHistory and biography$2msc 615 07$aHistory of mathematics 615 07$aHistory and biography 686 $a01-xx$2msc 700 $aBeery$b Janet$01070775 702 $aStedall$b Jacqueline 801 0$bch0018173 906 $aBOOK 912 $a9910153615103321 996 $aThomas Harriot's Doctrine of Triangular Numbers: the 'Magisteria Magna$92565016 997 $aUNINA