caa a22 4500 386385920 CHVBK 20180307112058.0 cr unu---uuuuu 161130e198901 xx s 000 0 eng 10.1017/S0305004100001407 doi S0305004100001407 pii (NATIONALLICENCE)cambridge-10.1017/S0305004100001407 Nets of quadrics and deformations of Σ33 singularities [Elektronische Daten] The 2-jet of a Σ3 map-germ f:(3, 0) → (3, 0) determines a net of quadratic maps from 3 to 3; for nets of general type this jet is sufficient for equivalence. The classification of such nets involves a single parameter c. It is shown in [7], also in [3], that the versai unfolding of f is topologically trivial over the parameter space. However, there are 4 connected components of this space of nets. The main object of this paper is to show that the corresponding unfolded maps are of different topological types. Copyright © Cambridge Philosophical Society 1989 Edwards S. A. Department of Pure Mathematics, University of Liverpool Wall C. T. C. Department of Pure Mathematics, University of Liverpool Mathematical Proceedings of the Cambridge Philosophical Society Cambridge University Press 105/1(1989-01), 109-115 0305-0041 105:1<109 1989 105 PSP https://doi.org/10.1017/S0305004100001407 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0305004100001407 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Edwards S. A. Department of Pure Mathematics, University of Liverpool NATIONALLICENCE 700 1- Wall C. T. C. Department of Pure Mathematics, University of Liverpool NATIONALLICENCE 773 0- Mathematical Proceedings of the Cambridge Philosophical Society Cambridge University Press 105/1(1989-01), 109-115 0305-0041 105:1<109 1989 105 PSP CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge