Three-dimensional $C_{12}$-manifolds
DOI:
https://doi.org/10.33044/revuma.3088Abstract
The present paper is devoted to three-dimensional $C_{12}$-manifolds (defined by D. Chinea and C. Gonzalez), which are never normal. We study their fundamental properties and give concrete examples. As an application, we study such structures on three-dimensional Lie groups.
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