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Compact topological surfaces and their immersions in 3D |
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| Without boundary | | Orientable |
- Sphere (genus 0)
- Torus (genus 1)
- Number 8 (genus 2)
- Pretzel (genus 3) ...
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| Non-orientable | |
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| With boundary | |
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Related
notions | | Properties | |
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| Characteristics | |
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| Operations | |
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