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Wall, C. T. C.

The first canonical stratum. (English) Zbl 0453.58009

J. Lond. Math. Soc., II. Ser. 21, 419-433 (1980).
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MSC:

58C25 Differentiable maps on manifolds
58K99 Theory of singularities and catastrophe theory
14H20 Singularities of curves, local rings
14H15 Families, moduli of curves (analytic)
32S60 Stratifications; constructible sheaves; intersection cohomology (complex-analytic aspects)

Keywords:

first canonical stratum; second intrinsic derivative; smooth map germs for maps between 8-manifolds and 6-manifolds; smooth stability; topological stability; versal unfolding; Thom-Whitney regularity conditions; canonical stratum in jet space
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