不吉祥的女人 发表于 2025-3-25 03:42:56
The Case for Sibling Partnerships,s, in 1639, which might have created projective geometry nearly two centuries before its actual birth. That work was ., or .. Except the work was lost until La Hire’s transcription was found about 1845. Even so, Poncelet knew about involution, an invention of Desargues, when he wrote his 1822 .; the移植 发表于 2025-3-25 11:26:39
Einflussfaktoren auf das Sicca-Syndrom,velop and apply mathematical formulations to physical phenomena, including the most basic principle of engineering: to balance weights .. and .. on a weightless lever when they are on opposite sides of the fulcrum, their distances from the fulcrum .. and .. must satisfy ... = .... His mathematical aDiuretic 发表于 2025-3-25 14:09:56
Sibling Relationships Across the Life SpanGaspard Monge (1746–1818)led a revival of geometry in France. Despite his background as a commoner, his talent brought him in 1765 to the school of military engineering at Mézières, then the leading school in France for scientific studies.Axon895 发表于 2025-3-25 17:34:56
http://reply.papertrans.cn/23/2297/229611/229611_24.pngexorbitant 发表于 2025-3-25 20:51:57
The Case for Sibling Partnerships,This introductory treatment of projective geometry essentially ends with Jacob Steiner’s work. But it is good to see several of the changes, after Steiner’s work, which have been central in the development of the subject since Steiner’s time.Kinetic 发表于 2025-3-26 01:01:27
http://reply.papertrans.cn/23/2297/229611/229611_26.png直言不讳 发表于 2025-3-26 05:19:18
http://reply.papertrans.cn/23/2297/229611/229611_27.png金丝雀 发表于 2025-3-26 08:30:11
Nineteenth Century,Gaspard Monge (1746–1818)led a revival of geometry in France. Despite his background as a commoner, his talent brought him in 1765 to the school of military engineering at Mézières, then the leading school in France for scientific studies.dowagers-hump 发表于 2025-3-26 15:42:10
Steiner: Cross-Ratio, Projective Forms, and Conics,The most important works in projective geometry following closely on Poncelet’s 1822 work were A. Moebius’s . (1827) and Jacob Steiner’s . (1832). Moebius introduced the term . and studied collineations of the plane by means of barycentric coordinates, a type of homogeneous coordinates that we will examine in Chap. ..FOVEA 发表于 2025-3-26 20:42:33
Looking Ahead,This introductory treatment of projective geometry essentially ends with Jacob Steiner’s work. But it is good to see several of the changes, after Steiner’s work, which have been central in the development of the subject since Steiner’s time.