En utilisant une nouvelle définition des second et troisième homomorphismes de Johnson, on simplifie et on généralise les résultats de Morita sur l'invariant de Casson des sphères d'homologie définies par scindement de Heegard. En particulier, on calcule l'invariant de Casson des sphères d'homologie obtenues en recollant deux corps d'anses par un homéomorphisme du groupe de Torelli.
Using a new definition of the second and third Johsnon homomorphisms, we simplify and extend the work of Morita on the Casson invariant of homology-spheres defined by Heegard splittings. In particular, we calculate the Casson invariant of the homology-sphere obtained by gluing two handlebodies along a homeomorphism of the boundary belonging to the Torelli subgroup.
@article{AIF_2004__54_4_1107_0, author = {Perron, Bernard}, title = {Mapping class group and the Casson invariant}, journal = {Annales de l'Institut Fourier}, volume = {54}, year = {2004}, pages = {1107-1138}, doi = {10.5802/aif.2045}, mrnumber = {2111023}, zbl = {02162421}, language = {en}, url = {http://dml.mathdoc.fr/item/AIF_2004__54_4_1107_0} }
Perron, Bernard. Mapping class group and the Casson invariant. Annales de l'Institut Fourier, Tome 54 (2004) pp. 1107-1138. doi : 10.5802/aif.2045. http://gdmltest.u-ga.fr/item/AIF_2004__54_4_1107_0/
[B] Braids, links and mapping class groups, Princeton Univ. Press, Princeton, Ann. of Math. Stud., Tome vol 82 (1974) | MR 375281 | Zbl 0305.57013
[C] Lectures at MSRI (1985)
[G] Automorphisms of a 3-dimensional handlebody, Abh. Math. Sem. Univ. Hamburg, Tome 26 (1964), pp. 191-210 | MR 159313 | Zbl 0229.57005
[GG] Braids and Signatures (to appear in Bull. Math. Soc. France) | Numdam | MR 2233695 | Zbl 1103.57001
[GL] On the signature of a link, Invent. Math., Tome 47 (1978), pp. 53-69 | MR 500905 | Zbl 0391.57004
[GM] Notes sur l'invariant de Casson des sphères d'homologie de dimension 3, Enseign. math., Tome 38 (1992), pp. 233-290 | MR 1189008 | Zbl 0776.57008
[J1] An abelian quotient of the mapping class group , Math. Ann., Tome 249 (1980), pp. 225-242 | MR 579103 | Zbl 0409.57009
[J2] The structure of the Torelli group I, Annals of Math., Tome 118 (1983), pp. 423-442 | MR 727699 | Zbl 0549.57006
[J3] The structure of the Torelli group II, Topology, Tome 24 (1985), pp. 113-126 | MR 793178 | Zbl 0571.57009
[Me1] Die signatur von lokalen koeffizientensystemen und Faserbündeln, Bonner Mathematische Schriften, Tome 53 (1972) | MR 305402 | Zbl 0243.58004
[Me2] Die signatur von Flächenbündeln, Math. Ann., Tome 201 (1973), pp. 239-264 | MR 331382 | Zbl 0241.55019
[Mo1] Casson's invariant for homology 3-spheres and characteristic classes of surface bundles I, Topology, Tome 28 (1989), pp. 305-323 | MR 1014464 | Zbl 0684.57008
[Mo2] On the structure of the Torelli group and the Casson invariant, Topology, Tome 30 (1991), pp. 603-621 | MR 1133875 | Zbl 0747.57010
[Mo3] The extension of Johnson's homomorphism from the Torelli group to the mapping class group, Invent. Math., Tome 111 (1993), pp. 197-224 | MR 1193604 | Zbl 0787.57008
[Mo4] The structure of the mapping class group and characteristic classes of surface bundles, Mapping class groups and Moduli spaces of Riemann surfaces (Contemp. Math.) Tome 150 (1993), pp. 303-315 | Zbl 0791.57018
[Mo5] Abelian quotients of subgroups of the mapping class group of surfaces, Duke Math. J., Tome 70 (1993), pp. 699-726 | MR 1224104 | Zbl 0801.57011
[Mo6] Casson invariant, signature defect of framed manifolds and second characteristic classes of surface bundles, J. Diff. Geom., Tome 47 (1997), pp. 560-599 | MR 1617632 | Zbl 0903.57008
[Mu] The generalized Casson invariant for 2-fold branched covers of and the Jones polynomial, Topology, Tome 32 (1993), pp. 419-438 | MR 1217078 | Zbl 0784.57003
[Pe] Homomorphic extensions of Johnson homomorphisms via Fox Calculus, Ann. Inst. Fourier, Tome 54 (2004) no. 4, pp. 1073-1106 | Numdam | MR 2111022 | Zbl 02162420
[Pi] Une construction intrinsèque du cÏur de l'invariant de Casson, Ann. Inst. Fourier, Tome 51 (2001) no. 6, pp. 1741-1761 | Numdam | MR 1871288 | Zbl 0983.57010
[Po] Two theorems on the mapping class group of surfaces, Proc. Amer. Math. Soc., Tome 68 (1978), pp. 347-350 | MR 494115 | Zbl 0391.57009
[PV] Groupe de monodromie géométrique des singularités simples, Math. Ann., Tome 306 (1996), pp. 231-245 | MR 1411346 | Zbl 0863.32013
[R] Knots and links, Publish or Perish Inc., Berkeley CA (1976) | MR 515288 | Zbl 0339.55004
[S] On homeomorphisms of a 3-dimensional handlebody, Can. J. Math., Tome 29 (1977), pp. 111-124 | MR 433433 | Zbl 0339.57001
[Si] Three dimensional manifolds and their Heegard diagrams, Trans. Amer. Math. Soc., Tome 35 (1933), pp. 88-111 | MR 1501673 | Zbl 0006.18501