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名詞

orthant (plural orthants)

1. (geometry) A n-dimensional generalization of the quadrant (in two-dimensional Cartesian space) and octant (in three-dimensional space).
   • 1992, Hal R. Varian, Microeconomic Analysis, 3rd edition, Norton, page 114:

     Consider preferences defined over the nonnegative orthant by ${\displaystyle (x_{1},x_{2})\succ (y_{1},y_{2})}$ if <math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle x_{1}+x_{2} x 1 + x 2 < y 1 + y 2 {\displaystyle x_{1}+x_{2} <img loading="lazy" src="https://wikimedia.org/api/rest_v1/media/math/render/svg/5a2b2cf8498ed386bb9a6deb1528a06a78a89315" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:17.934ex; height:2.343ex;" alt="{\displaystyle x_{1}+x_{2} […]

同意語

• hyperoctant