Strong Deformation Retract
المؤلف:
Bredon, G. E.
المصدر:
Topology and Geometry. New York: Springer-Verlag, 1993.
الجزء والصفحة:
...
20-5-2021
1992
Strong Deformation Retract
A subspace 
of 
is called a strong deformation retract of 
if there is a homotopy 
(called a retract) such that for all 
, 
, and 
,
1. 
,
2. 
, and
3. 
.
If the last equation is required only for 
, the retract is called simply a deformation retract.
REFERENCES:
Bredon, G. E. Topology and Geometry. New York: Springer-Verlag, 1993.
Hatcher, A. Algebraic Topology. Cambridge, England: Cambridge University Press, 2001.
0
0
الاكثر قراءة في التبلوجيا
اخر الاخبار
اخبار العتبة العباسية المقدسة
