Communications of the Korean Mathematical Society (대한수학회논문집)
- Volume 11 Issue 1
- /
- Pages.235-244
- /
- 1996
- /
- 1225-1763(pISSN)
- /
- 2234-3024(eISSN)
A sequence of homotopy subgroups of a CW-pair
Abstract
For a self-map f of a CW-pair (X, A), we introduce the G(f)-sequence of (X, A) which consists of subgroups of homotopy groups in the homotopy sequence of (X, A) and show some properties of the relative homotopy Jian groups. We also show a condition for the G(f)-sequence to be exact.