设m.A=sup{mC:CA为紧集},若AR,m.A=m*A<∞,则A可测.
问答题设AR,0≤α≤m*A,则有BA,使m*B=α
问答题作互不相交的AnR(n=1,2...),使m*(An)<∑m*An
问答题设AnR,{An}是升列,则m*(An)=
问答题设AR,则有Gδ集B,使AB,且m*A=mB
问答题设f:X→X是双射,μ*f(A)=μ*A()则当A为μ*-可测时f(A)亦然