Fi'a- 1   Wto do   4.1.   f red Theorem
__£^2___    Uriyripůcjpq   ex těmto* JPfroperoij,
		77,
		77 J
		
Fld.H    do- tí.   2A Theorem fyuk :    "Retraction   X>I —? XHo}oA*J