Geodesic
Webs and Singularities
Journal of Singularities, Tome 9 (2014), pp. 151-167

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We investigate the singular web structure of first-order PDEs from the viewpoint of singularity theory. Most of the results given have already appeared in papers by others, as well as the author in various different terminologies. The new results are the construction of mini-versal webs from the deformation of isolated singularities, and their classification. We prove also the existence of the resonance curve for generic 3-webs with cuspidal singular locus. We introduce also Klein-Halphen webs with polyhedral symmetry and Fermat webs, and we investigate their properties.
DOI : 10.5427/jsing.2014.9l
Classification : 53A60, 14B05 
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     author = {Isao Nakai},
     title = {Webs and {Singularities}},
     journal = {Journal of Singularities},
     pages = {151--167},
     publisher = {mathdoc},
     volume = {9},
     year = {2014},
     doi = {10.5427/jsing.2014.9l},
     url = {http://geodesic.mathdoc.fr/articles/10.5427/jsing.2014.9l/}
}
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Isao Nakai. Webs and Singularities. Journal of Singularities, Tome 9 (2014), pp. 151-167. doi: 10.5427/jsing.2014.9l

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