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Strata in the deformation of real isolated singularities are in general non contractible. (English) Zbl 0433.14001
MSC:
14B07 Deformations of singularities
32S30 Deformations of complex singularities; vanishing cycles
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References:
[1] E. Brieskorn : Sur les groupes de tresses . Sém. Bourbaky 401, Nov. 1971. · Zbl 0277.55003 · numdam:SB_1971-1972__14__21_0 · eudml:109814
[2] P. Deligne : Les immeubles des groupes de tresses généralisés . Inventiones Math. 17 (1972) 273-302. · Zbl 0238.20034 · doi:10.1007/BF01406236 · eudml:142173
[3] F. Lazzeri : ” Sistemi de coniugi ” (Preprint of Math. Inst. University of Pisa (1979) to appear in Boll. Un. Mat. Ital).
[4] E. Looijenga : ” The discriminant of a real simple singularity ” Compositio Math. 37 (1978) 51-62. · Zbl 0407.14001 · numdam:CM_1978__37_1_51_0 · eudml:89375
[5] Proceedings of Symposia in Pure Mathematics, vol. XXVIII (1976): ” Problems of present day mathematics ”. · Zbl 0326.00002
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