In mathematics,Jacob's ladder is asurface with infinitegenus and twoends. It was named afterJacob's ladder byÉtienne Ghys,^[1] because the surface can be constructed as the boundary of a ladder that is infinitely long in both directions.

• Cantor tree surface
• Loch Ness monster surface

1. Ghys, Étienne (1995), "Topologie des feuilles génériques",Annals of Mathematics, Second Series,141 (2):387–422,doi:10.2307/2118526,ISSN 0003-486X,JSTOR 2118526,MR 1324140
2. Walczak, Paweł (2004),Dynamics of foliations, groups and pseudogroups, Instytut Matematyczny Polskiej Akademii Nauk. Monografie Matematyczne (New Series) [Mathematics Institute of the Polish Academy of Sciences. Mathematical Monographs (New Series)], vol. 64, Birkhäuser Verlag,ISBN 978-3-7643-7091-6,MR 2056374

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