Summary
Small exponentials in asymptotic representations of functionsy(k; X) (k → ∞) can appear and disappear across sets of codimension 1 in the space of variables X. These changes are not discontinuous but happen smoothly and according to a universal law.
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Dedicated to René Thom.
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Berry, M.V. Stokes’ phenomenon; smoothing a victorian discontinuity. Publications Mathématiques de l’Institut des Hautes Scientifiques 68, 211–221 (1988). https://doi.org/10.1007/BF02698550
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DOI: https://doi.org/10.1007/BF02698550