On the Marinus--Ptolemy and Delisle--Euler conical maps
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866916734539137024 |
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| author | Miyachi, Hideki Ohshika, Ken'Ichi Papadopoulos, Athanase |
| author_facet | Miyachi, Hideki Ohshika, Ken'Ichi Papadopoulos, Athanase |
| contents | We examine connections between the mathematics behind methods of drawing geographical maps due, on the one hand to Marinos and Ptolemy (1st-2nd c. CE) and on the other hand to Delisle and Euler (18th century). A recent work by the first two authors of this article shows that methods of Delisle and Euler for drawing geographical maps, which are improvements of methods of Marinus and Ptolemy, are best among a collection of geographical maps we term ``conical''. This is an instance where after practitioners and craftsmen (here, geographers) have used a certain tool during several centuries, mathematicians prove that this tool is indeed optimal. Many connections among geography, astronomy and geometry are highlighted. The fact that the Marinos--Ptolemy and the Delisle--Euler methods of drawing geographical maps share many non-trivial properties is an important instance of historical continuity in mathematics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_22694 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On the Marinus--Ptolemy and Delisle--Euler conical maps Miyachi, Hideki Ohshika, Ken'Ichi Papadopoulos, Athanase History and Overview Differential Geometry Geometric Topology We examine connections between the mathematics behind methods of drawing geographical maps due, on the one hand to Marinos and Ptolemy (1st-2nd c. CE) and on the other hand to Delisle and Euler (18th century). A recent work by the first two authors of this article shows that methods of Delisle and Euler for drawing geographical maps, which are improvements of methods of Marinus and Ptolemy, are best among a collection of geographical maps we term ``conical''. This is an instance where after practitioners and craftsmen (here, geographers) have used a certain tool during several centuries, mathematicians prove that this tool is indeed optimal. Many connections among geography, astronomy and geometry are highlighted. The fact that the Marinos--Ptolemy and the Delisle--Euler methods of drawing geographical maps share many non-trivial properties is an important instance of historical continuity in mathematics. |
| title | On the Marinus--Ptolemy and Delisle--Euler conical maps |
| topic | History and Overview Differential Geometry Geometric Topology |
| url | https://arxiv.org/abs/2503.22694 |