“degenerate quadric”的概念、定义、翻译、参考文献-科学参考

单词	degenerate quadric
释义	degenerate quadric Mathematics The quadric with equation ax² + by² + cz² + 2fyz + 2gzx + 2hxy + 2ux + 2vy + 2wz + d = 0 is degenerate if Δ‎ = 0, where $Δ = \| \begin{matrix} a & h & g & u \\ h & b & f & v \\ g & f & c & w \\ u & v & w & d \end{matrix} \| .$ The non‐degenerate quadrics are the ellipsoid, the hyperboloid of one sheet, the hyperboloid of two sheets, the elliptic paraboloid, and the hyperbolic paraboloid.
随便看	offspring off the grid off-topic discussion Of star OFX o.g oganesson ogive ogives Oglethorpe, James Edward (1696–1785) OGPU Ohauan OH line ohm OH maser Ohm, Georg Simon Ohm, Georg Simon (1787–1854) ohmic ohmic contact ohmic loss ohmmeter ohm metre(symbol: Ω m) ohms per square ohm(symbol: Ω) Ohm’s law

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