The author provides the missing proofs that the 16 rigid-isotopy classes of singular bidegree (4,3) real curves on a hyperboloid with one node or cusp are each connected, completing the classification by complex scheme.
Complex topological invariants of real algebraic curves on a hyperboloid and on an ellipsoid,
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Graphs of trigonal curves and rigid isotopies of singular real algebraic curves of bidegree $(4,3)$ on a hyperboloid
The author provides the missing proofs that the 16 rigid-isotopy classes of singular bidegree (4,3) real curves on a hyperboloid with one node or cusp are each connected, completing the classification by complex scheme.