
theorem Th45:
  Prod_Measure(L-Meas 1) = L-Meas
& for E be Element of L-Field holds E in Prod_Field(L-Field 1)
proof
A1: 1 in Seg 1;
    Prod_Measure(L-Meas 1) = (L-Meas 1).1 by MEASUR13:def 13;
    hence Prod_Measure(L-Meas 1) = L-Meas by A1,FUNCOP_1:7;
    thus for E be Element of L-Field holds E in Prod_Field(L-Field 1) by Th41;
end;
