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Tesseract vs Undefined - What's the difference?

tesseract | undefined |

As a noun tesseract

is (mathematics) the four-dimensional analogue of a cube; a 4d polytope bounded by eight cubes (in the same way a cube is bounded by six squares).

As an adjective undefined is

lacking a definition or value.

tesseract

English

Noun

(en noun)
  • (mathematics) The four-dimensional analogue of a cube; a 4D polytope bounded by eight cubes (in the same way a cube is bounded by six squares).
  • (science fiction) Any of various fictional mechanisms that explain extradimensional, superluminal, or time travel outside the geometry of the physical universe.

    • Synonyms

    * (analogue of a cube) four-dimensional hypercube, , octachoron, tetracube

    Hypernyms

    * hypercube, polytope

    See also

    * (wikipedia "tesseract") * Mathworld article on the tesseract

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined