Crumpled cube
From HandWiki
In geometric topology, a branch of mathematics, a crumpled cube is any space in R3 homeomorphic to a 2-sphere together with its interior.[1] Lininger showed in 1965 that the union of a crumpled cube and an open 3-ball glued along their boundaries is a 3-sphere.[2]
References
- ↑ Martin, Joseph (1966). "The sum of two crumpled cubes". Michigan Mathematical Journal 13 (2): 147–151. doi:10.1307/mmj/1028999538. http://projecteuclid.org/euclid.mmj/1028999538.
- ↑ Lininger, Lloyd L. (1965). "Some results on crumpled cubes". Transactions of the American Mathematical Society 118: 534–549. doi:10.2307/1993977. ISSN 0002-9947.
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