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Singular projections of generic 2-dim surfaces in ℝ³ with singular boundary to 2-space are studied. The case of projections of surfaces with nonsingular boundary has been treated by Bruce and Giblin. The aim of this paper is to generalise these results to the simplest singular case where the boundary of the surface consists of two transversally intersecting lines. Local models for germs of generic singular projections of corank ≤ 1 and codimension ≤ 3 are given. We also present geometrical realisations via the notion of symmetrical unfolding.
Hassan Babiker. "Projections of surfaces with singular boundary." Banach Center Publications 82.1 (2008): 9-33. <http://eudml.org/doc/282517>.
@article{HassanBabiker2008, abstract = {Singular projections of generic 2-dim surfaces in ℝ³ with singular boundary to 2-space are studied. The case of projections of surfaces with nonsingular boundary has been treated by Bruce and Giblin. The aim of this paper is to generalise these results to the simplest singular case where the boundary of the surface consists of two transversally intersecting lines. Local models for germs of generic singular projections of corank ≤ 1 and codimension ≤ 3 are given. We also present geometrical realisations via the notion of symmetrical unfolding.}, author = {Hassan Babiker}, journal = {Banach Center Publications}, keywords = {projections; surfaces; classification; normal forms}, language = {eng}, number = {1}, pages = {9-33}, title = {Projections of surfaces with singular boundary}, url = {http://eudml.org/doc/282517}, volume = {82}, year = {2008}, }
TY - JOUR AU - Hassan Babiker TI - Projections of surfaces with singular boundary JO - Banach Center Publications PY - 2008 VL - 82 IS - 1 SP - 9 EP - 33 AB - Singular projections of generic 2-dim surfaces in ℝ³ with singular boundary to 2-space are studied. The case of projections of surfaces with nonsingular boundary has been treated by Bruce and Giblin. The aim of this paper is to generalise these results to the simplest singular case where the boundary of the surface consists of two transversally intersecting lines. Local models for germs of generic singular projections of corank ≤ 1 and codimension ≤ 3 are given. We also present geometrical realisations via the notion of symmetrical unfolding. LA - eng KW - projections; surfaces; classification; normal forms UR - http://eudml.org/doc/282517 ER -