In macroeconomics, the triangle model employed by new Keynesian economics is a model of inflation derived from the Phillips Curve and given its name by Robert J. Gordon. The model views inflation as having three root causes: built-in inflation, demand-pull inflation, and cost-push inflation.[1] Unlike the earliest theories of the Phillips Curve, the triangle model attempts to account for the phenomenon of stagflation.
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- ^ Robert J. Gordon (1988), Macroeconomics: Theory and Policy, 2nd ed., Chap. 22.4, 'Modern theories of inflation'. McGraw-Hill.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
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