MathsXVII age

1603 ADPietro Antonio Cataldi (mathematician born 1552 ad, died 1626 ).1602 ad –Cataldi discovered sixth and seveth perfect numbers, 216(217 – 1 )= 8589869056 and 218(219 - 1 ) = 137438691328.

Perfect number is a positive integer that is equal to the sum of its proper positive divisors.

1606 ADWillebrord Snell (mathematician born 1580 ad, died 1626 ).1606 ad – Snell take the first attempts to measure the meridian arc of the Earth s surface, in connection with that determines her height. PublishesMathemathic Memorandum.

1612 ADClaude-Gaspard Bachet de Méziriac (mathematician born 1580 ad, died 1626 ).1612 ad – Bachet publishes his work abouth mathematical puzzles and tricks, which will be the basis for almost all later books concerning mathematical entertainments.

1613 ADPietro Antonio Cataldi describes the square roots using periodic

fractions.

Bologna

1614 ADJohn Napier - (mathematician born 1550 ad, died 1617).1614 ad –First publishes his work about logarithms „Miriffci logarithmorum cannonis descriptio”

1617 ADWillebrord Snell describes the

trigonometric triangulation technique, which contributes to making accurate cartographic

measurements

Lejda

1620 ADPaul Guldin (mathematician born 1577 ad, died 1643).1620 ad –Guldi n formulates theorem about center of gravity.

1624 ADHenry Briggs (mathematician born 1561 ad, died 1630).1624 ad –Briggs published work „ Arithmetica Logarithmica” that gives the logarithms of natural numbers from 1 to 20 000 and 90 000 to 100 00.

It was the most important discovery of the seventeenth century, which had

time at the beginning of this century.In future years were opened the

scientific academies and published printed works.

Author of presentation Bartosz ZielinskiThe translation into English

Marcin Kowalczyk