Matches in DBpedia 2016-04 for { ?s ?p "In algebraic geometry, the Zeuthen–Segre invariant I is an invariant of complex projective surfaces, introduced by Zeuthen (1871) and rediscovered by Corrado Segre (1896). The invariant I is defined to be d – 4g – b if the surface has a pencil of curves, non-singular of genus g except for d curves with 1 ordinary node, and with b base points where the curves are non-singular and transverse."@en }
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- Zeuthen–Segre_invariant comment "In algebraic geometry, the Zeuthen–Segre invariant I is an invariant of complex projective surfaces, introduced by Zeuthen (1871) and rediscovered by Corrado Segre (1896). The invariant I is defined to be d – 4g – b if the surface has a pencil of curves, non-singular of genus g except for d curves with 1 ordinary node, and with b base points where the curves are non-singular and transverse.".
- Q8069822 comment "In algebraic geometry, the Zeuthen–Segre invariant I is an invariant of complex projective surfaces, introduced by Zeuthen (1871) and rediscovered by Corrado Segre (1896). The invariant I is defined to be d – 4g – b if the surface has a pencil of curves, non-singular of genus g except for d curves with 1 ordinary node, and with b base points where the curves are non-singular and transverse.".