| − | '''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. | + | A '''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. |