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{"type":"standard","title":"Napkin folding problem","displaytitle":"Napkin folding problem","namespace":{"id":0,"text":""},"wikibase_item":"Q4183841","titles":{"canonical":"Napkin_folding_problem","normalized":"Napkin folding problem","display":"Napkin folding problem"},"pageid":20688523,"lang":"en","dir":"ltr","revision":"1263749031","tid":"85f339a6-bd35-11ef-a02a-82a200ae9179","timestamp":"2024-12-18T11:45:05Z","description":"Origami math problem","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Napkin_folding_problem","revisions":"https://en.wikipedia.org/wiki/Napkin_folding_problem?action=history","edit":"https://en.wikipedia.org/wiki/Napkin_folding_problem?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Napkin_folding_problem"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Napkin_folding_problem","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Napkin_folding_problem","edit":"https://en.m.wikipedia.org/wiki/Napkin_folding_problem?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Napkin_folding_problem"}},"extract":"The napkin folding problem is a problem in geometry and the mathematics of paper folding that explores whether folding a square or a rectangular napkin can increase its perimeter. The problem is known under several names, including the Margulis napkin problem, suggesting it is due to Grigory Margulis, and the Arnold's rouble problem referring to Vladimir Arnold and the folding of a Russian ruble bank note. It is the first problem listed by Arnold in his book Arnold's Problems, where he calls it the rumpled dollar problem. Some versions of the problem were solved by Robert J. Lang, Svetlana Krat, Alexey S. Tarasov, and Ivan Yaschenko. One form of the problem remains open.","extract_html":"
The napkin folding problem is a problem in geometry and the mathematics of paper folding that explores whether folding a square or a rectangular napkin can increase its perimeter. The problem is known under several names, including the Margulis napkin problem, suggesting it is due to Grigory Margulis, and the Arnold's rouble problem referring to Vladimir Arnold and the folding of a Russian ruble bank note. It is the first problem listed by Arnold in his book Arnold's Problems, where he calls it the rumpled dollar problem. Some versions of the problem were solved by Robert J. Lang, Svetlana Krat, Alexey S. Tarasov, and Ivan Yaschenko. One form of the problem remains open.
"}{"slip": { "id": 206, "advice": "Don't waste food."}}
{"fact":"Neutering a cat extends its life span by two or three years.","length":60}
{"fact":"A female cat is called a queen or a molly.","length":42}
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