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A quadruple torus is a topological surface with four holes, formed from the connected sum of four tori. It has an orientable genus of 4 and an Euler characteristic of -6.

Structure and Sections

All orientable manifolds with four holes (i.e. with an Euler characteristic of -6) are homeomorphic to the quadruple torus due to the classification theorem of closed surfaces.

See Also

\mathbb{S}^2 \mathbb{T}^2 2\mathbb{T}^2 3\mathbb{T}^2 4\mathbb{T}^2
Sphere Torus Double torus Triple torus Quadruple torus

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