Appendix to "Congruences of small degree in G(1,4)": Pfaffian linkage in codimension three and applications to congruences

Arrondo Esteban, Enrique2023-06-202023-06-2019980092-787210.1080/00927879808826341https://hdl.handle.net/20.500.14352/57177We introduce the notion of Pfaffian linkage in codimension three and give sufficient conditions for the linked variety to be smooth. As a result, we are able to construct smooth congruences of lines in P-4 whose existence was an open problem.engAppendix to "Congruences of small degree in G(1,4)": Pfaffian linkage in codimension three and applications to congruencesjournal articlehttp://www.tandfonline.com/loi/lagb20restricted access512.7GrassmannianPfaffian linkageliaisoncodimension-threeGeometria algebraica1201.01 Geometría Algebraica