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:''"Pitiscus" redirects here. For the crater, see ]. For the scholar, see ].'' :''"Pitiscus" redirects here. For the crater, see ]. For the scholar, see ].''


⚫ '''Bartholomaeus''' ('''Barthélemy''', '''Bartholomeo''') '''Pitiscus''' (], ] – ], ]) was the 16th century ] ], ], and ], who first coined the word ].
]'s 1645 map of ] , spelled ''Grünberg'']]
]'s 1645 map of Germany, spelled ''Grūberg'', which equals to ''Grunberg'' (] ū=un)]]
]
⚫ '''Bartholomaeus Pitiscus''' (also ''Barthélemy, Bartholomeo'', ], ] – ], ]) was a 16th century ] ], ] and ] who first coined the word ].


Pitiscus was born to poor parents in ] (Zielona Góra) in ], the part of Austrian-ruled ]. He studied theology in ] and ]. A ], he was appointed to teach the ten year-old ] of the Rhine, by Frederick's Calvinist uncle ], as Frederick's father had died in ]. Pitiscus was subsequently appointed court ] at ] (Wrocław) and court preacher to Frederick. Pitiscus supported Frederick's subsequent measures against the ]. Pitiscus was born to poor parents in ] ({{lang-de|Grünberg}}) in ] and studied theology at ] and at ]. A ], he was appointed to teach the ten year-old ] of the Rhine, by Frederick's Calvinist uncle ], as Frederick's father had died in ]. Pitiscus was subsequently appointed court ] at ] (''Breslau'') and court preacher to Frederick. Pitiscus supported Frederick's subsequent measures against the ].


Pitiscus achieved fame with his influential work written in Latin, called ''Trigonometria: sive de solutione triangulorum tractatus brevis et perspicuus'' (], first edition printed in ]), which introduced<ref>Groundbreaking Scientific Experiments, Inventions, and Discoveries </ref> the word "trigonometry" to the English and French languages, translations of which had appeared in 1614 and 1619, respectively. It consists of five books on plane and spherical trigonometry. Pitiscus is sometimes credited with inventing the ], the symbol separating integers from decimal fractions, which appears in his trigonometrical tables and was subsequently accepted by ] in his logarithmic papers (] and ]). Pitiscus achieved fame with his influential work written in Latin, called ''Trigonometria: sive de solutione triangulorum tractatus brevis et perspicuus'' (], first edition printed in ]), which introduced the word "trigonometry" to the English and French languages, translations of which had appeared in 1614 and 1619, respectively. It consists of five books on plane and spherical trigonometry. Pitiscus is sometimes credited with inventing the ], the symbol separating integers from decimal fractions, which appears in his trigonometrical tables and was subsequently accepted by ] in his logarithmic papers (] and ]).


Pitiscus edited ''Thesaurus mathematicus'' (]) in which he improved the trigonometric tables of ] and also corrected Rheticus’ ''Magnus Canon doctrinæ triangulorum''. Pitiscus edited ''Thesaurus mathematicus'' (]) in which he improved the trigonometric tables of ] and also corrected Rheticus’ ''Magnus Canon doctrinæ triangulorum''.
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The classical scholar ] (1637-1727) was his nephew. The classical scholar ] (1637-1727) was his nephew.

== Literature ==
<references />
* S. Gottwald, H.-J. Ilgauds, K.-H. Schlote (Hrsg.): ''Lexikon bedeutender Mathematiker''. Verlag Harri Thun, Frankfurt a. M. 1990 ISBN 3-8171-1164-9


==External links== ==External links==
* *
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* ]

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Revision as of 22:06, 14 January 2008

"Pitiscus" redirects here. For the crater, see Pitiscus (crater). For the scholar, see Samuel Pitiscus.

Bartholomaeus (Barthélemy, Bartholomeo) Pitiscus (August 24, 1561 – July 2, 1613) was the 16th century Silesian trigonometrist, astronomer, and theologian, who first coined the word Trigonometry.

Pitiscus was born to poor parents in Zielona Góra (Template:Lang-de) in Lower Silesia and studied theology at Zerbst and at Heidelberg. A Calvinist, he was appointed to teach the ten year-old Frederick IV, Elector Palatine of the Rhine, by Frederick's Calvinist uncle John Casimir, as Frederick's father had died in 1583. Pitiscus was subsequently appointed court chaplain at Wrocław (Breslau) and court preacher to Frederick. Pitiscus supported Frederick's subsequent measures against the Roman Catholic Church.

Pitiscus achieved fame with his influential work written in Latin, called Trigonometria: sive de solutione triangulorum tractatus brevis et perspicuus (1595, first edition printed in Heidelberg), which introduced the word "trigonometry" to the English and French languages, translations of which had appeared in 1614 and 1619, respectively. It consists of five books on plane and spherical trigonometry. Pitiscus is sometimes credited with inventing the decimal point, the symbol separating integers from decimal fractions, which appears in his trigonometrical tables and was subsequently accepted by John Napier in his logarithmic papers (1614 and 1619).

Pitiscus edited Thesaurus mathematicus (1613) in which he improved the trigonometric tables of Georg Joachim Rheticus and also corrected Rheticus’ Magnus Canon doctrinæ triangulorum.

Pitiscus died in Heidelberg. The lunar crater Pitiscus is named after him.

The classical scholar Samuel Pitiscus (1637-1727) was his nephew.

External links

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