About this article
Published Online: Dec 05, 2019
Page range: 21 - 33
Received: Jan 06, 2019
Accepted: Jan 30, 2019
DOI: https://doi.org/10.2478/aupcsm-2019-0002
Keywords
© 2019 Pietro De Poi et al., published by Sciendo
This work is licensed under a Creative Commons Attribution Share-Alike 4.0 License.
This article presents the theory of focal locus applied to the hyper-surfaces in the projective space which are (finitely) covered by linear spaces and such that the tangent space is constant along these spaces.