Abstract
We investigate the linearizability problem for different classes of 4-webs in the plane. In particular, we apply the linearizability conditions, recently found by Akivis, Goldberg and Lychagin, to confirm that a 4-web MW (Mayrhofer's web) with equal curvature forms of its 3-subwebs and a nonconstant basic invariant is always linearizable (this result was first obtained by Mayrhofer in 1928; it also follows from the papers of Nakai). Using the same conditions, we further prove that such a 4-web with a constant basic invariant (Nakai's web) is linearizable if and only if it is parallelizable. Next we study four classes of the so-called almost parallelizable 4-webs APW a ,a=1,2,3,4 (for them the curvature K=0 and the basic invariant is constant on the leaves of the web foliation X a ), and prove that a 4-web APW a is linearizable if and only if it coincides with a 4-web MW a of the corresponding special class of 4-webs MW. The existence theorems are proved for all the classes of 4-webs considered in the paper.
Similar content being viewed by others
_References
Akivis, M. A. and Goldberg, V. V.: Conformal Differential Geometry and Its Generalizations, Wiley, New York, 1996 (MR 98a:53023; Zbl. 863.53002).
Akivis, M. A., Goldberg, V. V. and Lychagin, V. V.: Linearizability of d-webs, d _4, on 2-dimensional manifolds, Preprint, 2002, ar**v: math.DG/0209290.
Blaschke, W.: Einführung in die Geometrie der Waben, Birkhäuser, Basel, 1955 (MR 17, 780; Zbl. 68, 365).
Blaschke, W. and Bol, G.: Geometrie der Gewebe, Springer-Verlag, Berlin, 1938 (MR 6, p. 19; Zbl. 20, p. 67).
Bryant, R. L., Chern, S. S., Gardner, R. B., Goldsmith, H. L. and Griffiths, P. A.: Exterior Differential Systems, Springer-Verlag, New York, 1991 (MR 92h:58007; Zbl. 726.58002).
Cartan, É.: Sur les variétés à connexion affine et la théorie de la relativité généralisée, Ann. École Norm. 40 (1923), 325–412 (JFM 50, p. 542); OEuvres complètes: Partie III, Divers, gèométrie, différentielle, vol. 3, Gauthier-Villars, Paris, 1955, pp. 659-746 (MR 17, 697; Zbl. 15, 83).
Goldberg, V. V.: On the theory of four-webs of multidimensional surfaces on a differ-entiable manifold X 2, Izv. Vyssh. Uchebn. Zaved. Mat. 1977(11), 15–22 (Russian), English transl., Soviet Math. (Iz. VUZ) 21(11) (1977), 97-100 (MR 58 #30859; Zbl. 398.53009 & 453.53010).
Goldberg, V. V.: On the theory of four-webs of multidimensional surfaces on a dif-ferentiable manifold X 2, Serdica 6(2) (1980), 105–119 (Russian) (MR 82f:53023; Zbl. 453.53010).
Goldberg, V. V.: Theory of Multicodimensional (n +1) -Webs, Kluwer Acad. Publ., Dordrecht, 1988 (MR 89h:53021; Zbl. 668.53001).
Goldberg, V. V.: Curvilinear 4-webs with equal curvature forms of its 3-subwebs, In: Webs and Quasigroups, Tver State Univ., Tver, 1993, pp. 9–19 (MR 94g:53012; Zbl. 792.53010).
Goldberg, V. V.: Special classes of curvilinear 4-webs with equal curvature forms of its 3-subwebs, In: Webs and Quasigroups, Tver State Univ., Tver, 1996–1997, pp. 24-39 (MR 2001f:53037; Zbl. 903.53013).
Hènaut, A.: Caractérisation des tissus de C 2 dont le rang est maximal et qui sont linéarisables, Compositio Math. 94(3) (1994), 247–268 (MR 96a:32057; Zbl. 877.53013).
Kobayashi, S. and Nomizu, K.: Foundations of Differential Geometry,vol.1,Wiley-Interscience, New York, 1963 (MR 27 2945; Zbl. 119, p. 375).
Mayrhofer, K.: Kurvensysteme auf Flächen, Math. Z. 28 (1928), 728–752 (JFM 54, p. 745).
Mayrhofer, K.: Ñber Sechsensysteme, Abh. Math. Sem. Univ. Hamburg 7 (1929), 1–10 (JFM 55, p. 1013).
Nakai, I.: Curvature of curvilinear 4-webs and pencils of one forms, In: Topology of holomorphic dynamical systems and related topics (Kyoto, 1995), S¯urikaisekikenky¯ usho K¯ oky¯ uroku 955 (1996), no. 8, 109–132 (MR 98a:53026).
Nakai, I.: Curvature of curvilinear 4-webs and pencils of one forms: Variation on the theme a theorem of Poincaré, Mayrhofer and Reidemeister on curvilinear 4-webs, Comment. Math. Helv. 73 (1998), 177–205 (MR 99c:53013; Zbl. 926.53011).
Reidemeister, K.: Gewebe und Gruppen, Math. Z. 29 (1928), 427–435 (JFM 54, p. 746).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Goldberg, V.V. 4-Webs in the Plane and Their Linearizability. Acta Applicandae Mathematicae 80, 35–55 (2004). https://doi.org/10.1023/B:ACAP.0000013251.38211.88
Issue Date:
DOI: https://doi.org/10.1023/B:ACAP.0000013251.38211.88