English Dictionary

simplex

/ˈsɪmplɛks/

noun

(geometry, algebraic topology) An analogue in a space of arbitrary dimensionality of the triangle or tetrahedron; the convex hull of n+1 linearly independent points in n-dimensional space; in other words, the triangle, tetrahedron etc., generalized to an arbitrary number of dimensions.

The simplex is a fundamental concept in geometry.

意味（1）

(geometry, algebraic topology) An analogue in a space of arbitrary dimensionality of the triangle or tetrahedron; the convex hull of n+1 linearly independent points in n-dimensional space; in other words, the triangle, tetrahedron etc., generalized to an arbitrary number of dimensions.

意味（2）

(linguistics) A monomorphemic word, one without affixes.

The only indication that 139. is a simplex is the sentence intonation and the absence of a break between the verb and the subject.