abstract:A unit fraction is a rational number written as a fraction where the numerator is one and the denominator is a positive integer. A unit fraction is therefore the reciprocal of a positive integer, 1/n.
The departure of Lawson is especially intriguing, because he took over as head of aeronautics only 12 months ago, and he is leaving to lead a second-tier company that has a fraction of the sales his Lockheed unit did.