In mathematics, a genus g surface (also known as a g-torus or g-holed torus) is a surface formed by the connected sum of g many tori: the interior of a disk is removed from each of g many tori and the boundaries of the g many disks are identified (glued together), forming a g-torus. The genus of such a surface is g. A genus g surface is a two-dimensional manifold. The classification theorem for surfaces states that every compact connected two-dimensional manifold is homeomorphic to either the sphere, the connected sum of tori, or the connected sum of real projective planes.
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| - Superficie de genus g (es)
- Genus g surface (en)
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| - In mathematics, a genus g surface (also known as a g-torus or g-holed torus) is a surface formed by the connected sum of g many tori: the interior of a disk is removed from each of g many tori and the boundaries of the g many disks are identified (glued together), forming a g-torus. The genus of such a surface is g. A genus g surface is a two-dimensional manifold. The classification theorem for surfaces states that every compact connected two-dimensional manifold is homeomorphic to either the sphere, the connected sum of tori, or the connected sum of real projective planes. (en)
- En matemáticas, una superficie de genus g (también conocida como superficie de género g, g-toro o toro con g orificios) es un un tipo de superficie formada por la suma conexa de g toros: se extrae el interior de un disco de cada uno de los g elementos conexos delimitando superficies toroidales, que una vez pegadas exteriormente sin alterar el número total de orificios permiten formar un g-toro. El genus de tal superficie es g. (es)
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| - En matemáticas, una superficie de genus g (también conocida como superficie de género g, g-toro o toro con g orificios) es un un tipo de superficie formada por la suma conexa de g toros: se extrae el interior de un disco de cada uno de los g elementos conexos delimitando superficies toroidales, que una vez pegadas exteriormente sin alterar el número total de orificios permiten formar un g-toro. El genus de tal superficie es g. Una superficie de género g es una variedad bidimensional. El teorema de clasificación de superficies establece que cada variedad bidimensional compacta y conexa es homeomórfica con respecto a la esfera, a la suma conexa de toros o a la suma conexa de planos proyectivos reales. (es)
- In mathematics, a genus g surface (also known as a g-torus or g-holed torus) is a surface formed by the connected sum of g many tori: the interior of a disk is removed from each of g many tori and the boundaries of the g many disks are identified (glued together), forming a g-torus. The genus of such a surface is g. A genus g surface is a two-dimensional manifold. The classification theorem for surfaces states that every compact connected two-dimensional manifold is homeomorphic to either the sphere, the connected sum of tori, or the connected sum of real projective planes. (en)
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