Laffer curve at an intermediate rate of taxation, and then falls again to zero revenue at a 100% tax rate. However, the shape of the curve is uncertain and disputed among economists. Under some assumptions, such as revenue being a continuous function of the rate of taxation, the maximum illustrated by the Laffer curve is a result of Rolle's theorem, which is a standard result in calculus. One implication of the Laffer curve is that reducing or increasing tax rates beyond a certain point is counter-productive for raising further tax revenue. A hypothetical Laffer curve for any given economy can only be
Notional Keeneland three weeks before the running of the Kentucky Derby. He will undergo surgery for the injury which is not life-threatening, but there is question about whether he will be able to return to racing. He did not run in any of the Triple Crown races. Having an uneventful four-year-old season, Notional returned to form winning the July 5th, 2008 running of the Salvator Mile Handicap under Joe Bravo. Notional Notional (born February 1, 2004 in California) is an American Thoroughbred racehorse. He was sired by In Excess and out of the mare Truly Blessed. His damsire, French Deputy, is