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{{Short description|German mathematician (1487–1567)}} |nationality = German ...

...r designed by a commission assembled by Pope Gregory XIII in the sixteenth century."}}{{efn|Many countries that use other calendars for religious purposes use ...ays; when Russia and Greece did so (for their civil calendars) in the 20th century, the jump was 13 days. For other countries and territories, see [[List of a ...

...clid's]] ''[[Euclid's Elements|Elements]]'', and mentions the proposals of German mathematicians [[Carl Anton Bretschneider]] and [[Hermann Hankel]] that Pyt ...[[similar figures]]. This was known by [[Hippocrates of Chios]] in the 5th century BC,<ref>Heath, T. L., ''A History of Greek Mathematics'', Oxford University ...

...the human population will begin to decline in the second half of the 21st century.<ref>{{Cite news |last1=Cave |first1=Damien |last2=Bubola |first2=Emma |las ...s, broken down by continents, were published in the first half of the 19th century, at 600 million to 1&nbsp;billion in the early 1800s and 800&nbsp;million t ...

==Recorded history before 12th century== ...Oxford|access-date=14 October 2014|url=http://www.visitoruk.com/Oxford/8th-century-T4311.html}}</ref> ...

...raphical images in Civitates Orbis Terrarum. See the [[:de:Frans Hogenberg|German wikipedia]] and [[commons:Category:Frans Hogenberg|commons]].</ref>]] ...significant advances in the [[history of cartography]], inspiring the 19th century map historian [[Adolf Erik Nordenskiöld|Adolf Nordenskiöld]] to write "The ...

...ue-4-2012/age-management-as-a-tool-for-the-demographic-decline-in-the-21st-century-an-overview-of-its-characteristics|journal=Journal of Entrepreneurship, Man At least two bills have been filed before the [[16th Congress of the Philippines]] seeking to address age discrimination in empl ...