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'''Tesseract''' is a four-dimensional cube. In three-dimensional space, it is depicted as a [[cube]] suspended within another cube with all the vertices or corners connected.  The tesseract was used in [[Madelaine L'Engel]]'s [[A Wrinkle In Time]] as "a wrinkle in time" the internal cube flows outward as the external one flows inward square by square.

'''Tesseract''' is a four-dimensional cube. In three-dimensional space, it is depicted as a [[cube]] suspended within another cube with all the vertices or corners connected.  The tesseract was used in [[Madeleine L'Engle]]'s [[A Wrinkle In Time]] as "a wrinkle in time" the internal cube flows outward as the external one flows inward square by square.

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