nullsurface
in a pious manner
The opening price for an item at an auction. / (horse racing) The final odds on a horse when the race starts; also used to designate a system of fixed-odds betting using such prices. Abbreviation: SP.
plural of pycnogonoid
(mathematics) A surface whose normal at all points is a null vector
一般相対性理論の研究において、事象の地平線はしばしば時空の因果的に異なる領域を分ける、各点の法線がすべてヌルベクトルである曲面として記述できる。
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DiQt
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