Calculation of the avoiding ideal for $\Sigma^{1,1}$

Tamás Terpai¹
Banach Center Publ. 85 (2009), 307-313
doi:10.4064/bc85-0-21
Abstract: We calculate the mapping $H^*(BO;{\mathbb Z}_2) \rightarrow H^*(K^{1,0};{\mathbb Z}_2)$ and obtain a generating system of its kernel. As a corollary, bounds on the codimension of fold maps from real projective spaces to Euclidean space are calculated and the rank of a singular bordism group is determined.

MSC (2010): Primary 57R45; Secondary 57R19, 57R90.
Retrieve article in PDF (200.65 Kb)

Alfréd Rényi Institute of Mathematics
13-15 Reáltanoda u.
1053 Budapest, Hungary