{"slug": "gottfried-wilhelm-leibniz", "label": "Gottfried Wilhelm Leibniz", "wikipedia": "https://en.wikipedia.org/wiki/Gottfried_Wilhelm_Leibniz", "wikidata": "https://www.wikidata.org/wiki/Q9047", "qid": "Q9047", "description": "German mathematician and philosopher (1646–1716)", "entries": 7, "years": 6, "span": [1646, 1765], "span_label": ["1646 CE", "1765 CE"], "topics": [{"title": "Science & Discovery", "count": 3}, {"title": "Births", "count": 1}, {"title": "Culture & Society", "count": 1}, {"title": "Deaths", "count": 1}, {"title": "Technology & Infrastructure", "count": 1}], "also_known_as": ["Gottfried Leibniz"], "related": [{"slug": "saint-petersburg", "label": "Saint Petersburg", "shared": 1}], "items": [{"year": 1646, "year_label": "1646 CE", "section": "Births", "date": "July 1", "text": "July 1 – Gottfried Wilhelm Leibniz, German philosopher, scientist, and mathematician (d. 1716)", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1360055090#July–September", "title": "1646", "revid": 1360055090, "section": "Births › July–September"}}, {"year": 1675, "year_label": "1675 CE", "section": "Science & Discovery", "date": "October 29", "text": "October 29 – Gottfried Leibniz makes the first use of the long s (∫) as a symbol of the integral in calculus.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1365992546#October–December", "title": "1675", "revid": 1365992546, "section": "Events › October–December"}}, {"year": 1675, "year_label": "1675 CE", "section": "Science & Discovery", "date": "November 11", "text": "November 11 – Gottfried Leibniz makes the earliest known use of infinitesimal calculus in the breaking down of a function.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1365992546#October–December", "title": "1675", "revid": 1365992546, "section": "Events › October–December"}}, {"year": 1677, "year_label": "1677 CE", "section": "Science & Discovery", "date": null, "text": "Gottfried Wilhelm Leibniz gives a complete solution to the tangent problem.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1360727449#Date_unknown", "title": "1677", "revid": 1360727449, "section": "Events › Date unknown"}}, {"year": 1700, "year_label": "1700 CE", "section": "Culture & Society", "date": "July 11", "text": "July 11 – The Prussian Academy of Sciences is founded, with Gottfried Leibniz as president.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1366570351#July–September", "title": "1700", "revid": 1366570351, "section": "Events › July–September"}}, {"year": 1716, "year_label": "1716 CE", "section": "Deaths", "date": "November 14", "text": "November 14 – Gottfried Leibniz, German philosopher, scientist, and mathematician (b. 1646)", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1360559357#November", "title": "1716", "revid": 1360559357, "section": "Deaths › November"}}, {"year": 1765, "year_label": "1765 CE", "section": "Technology & Infrastructure", "date": "April 26", "text": "April 26 – At Saint Petersburg, German engineer Christian Kratzenstein presents to the Russian Academy of Sciences a perfected version of the arithmetical machine originally invented by Gottfried Leibniz. Kratzenstein claims that his machine solves the problem with the Leibniz machine has with calculations above four digits, perfecting the flaw where the machine is \"prone to err whenever it is necessary to make a number of 9999 move to 10000\", but the machine is not developed further.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1373039097#April–June", "title": "1765", "revid": 1373039097, "section": "Events › April–June"}}]}