The Economist has described the effort as "a new art" for Ukraine of which "the learning curve is steep".
Even in a simple court dance, he's emphatic about the precise musical beat on which the foot has to be placed flat on the ground, the accent of a plié, the height at which a pointed toe should be lifted, the twist or curve of a torso.
In the New York Times earlier this year, Paul Krugman wrote of an economic effect called "The Great Gatsby curve," a graph that measures fiscal inequality against social mobility and shows that America's marked economic inequality means it has correlatively low social mobility.
There is a bulge on our population curve; the "baby boom" generation is coming up to retirement.
For values in between the sine and cosine vary in a smooth curve, so that a plot of sin x against x is your basic wavy line.
Similarly, the slope of the cosine curve at any point is negatively proportional to the sine.
The slope of the sine curve at any point (which is to say the rate of change of x with respect to θ) is in fact equal to the height of cosine at that point, if the angle is measured in radians - this is one of the reasons mathematicians like radians.
The chancellor said Europe needed to show that it had enough firepower to convince the markets it was getting ahead of the curve, and made it clear that the €440bn European Financial Stability Facility needed to be beefed up.
"I see an upward curve in the last two weeks," said the chief executive, Hans-Joachim Watzke.
No matter how many business plans you do, there is always going to be that proverbial curve ball that will turn your plan on its head.
If it was normal variation you'd expect more of a bell-shaped curve".
