cocoon
发表于 2025-3-27 00:11:37
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RACE
发表于 2025-3-27 04:52:49
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磨坊
发表于 2025-3-27 07:31:00
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CAGE
发表于 2025-3-27 09:26:03
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Myelin
发表于 2025-3-27 14:37:42
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sulcus
发表于 2025-3-27 19:38:41
,Plücker, Hesse, Higher Plane Curves, and the Resolution of the Duality Paradox,. + . + . = 0 represents a quartic. The equation may be written in homogeneous coordinates [.] by setting . = .′/.′, . = .′/.′ and multiplying through by the lowest power of .′ that produces a polynomial equation (if you wish you may then remove the primes) when the curve is considered to lie in the
mercenary
发表于 2025-3-27 22:36:32
The Mathematical Theory of Plane Curves,ugh a point, or more than one. If only one, then the curve will have a tangent there. To study the nature of a curve near a particular point we may always suppose that we have moved the point to the origin.
初学者
发表于 2025-3-28 03:09:40
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exclamation
发表于 2025-3-28 10:13:23
Riemann: Geometry and Physics,onventional in his tastes, close to his family and awkward outside them.. As a child, he was taught by his father, a pastor, and then for some years at school before going to Göttingen University. There he had initially intended to study theology, in accordance with his father’s wishes — Göttingen w
津贴
发表于 2025-3-28 11:06:44
Textbook 20071st editionTopics covered in the first part of the book are projective geometry, especially the concept of duality, and non-Euclidean geometry. The book then moves on to the study of the singular points of algebraic curves (Plücker’s equations) and their role in resolving a paradox in the theory of duality; to