J M Keynes had already completely developed the technical, mathematical and logical framework of analysis for the concept of the multiplier in his A Treatise on Probability in 1921 long before Richard Kahn came to Cambridge in 1927 at the age of 22. However, Keynes did not have the time or...

R J Kent's 2007 History Of Political Economy article ends with the claim that “…But there certainly are many unanswered questions concerning Keynes's role in the development of the multiplier…”. Pace Kent, anyone who has read Keynes's chapter 26 in the A Treatise on Probability in 1921...

The manner in which R. Kahn presented his mathematical results on the multiplier in the Economic Journal of June, 1931, is identical to the style of presenting mathematical results used by Keynes to present his mathematical analysis starting with the A Treatise on Probability in 1921. Keynes's...

Keynes had completely developed the Logical Theory of the Multiplier in his A Treatise on Probability in 1921 in chapter 26 on page 315 and in footnote 1 on page 315. This same analysis appears in his second, 1908, Fellowship Dissertation at Cambridge University. Keynes, however, had no interest...

Dennis Robertson had no understanding of how J M Keynes's Multiplier concept was based on the use of differential calculus techniques that required one to take the mathematical limit of an infinite, decreasing, geometric series. Robertson failed to see that the derivative concept requires that...

Joan Robinson had no idea about what Keynes was talking about in the General Theory with respect to (a) Keynes's Aggregate Supply Curve of Chapter 20,which is a locus of all possible, multiple equilibrium results (Full employment, underemployment, involuntary unemployment), his Liquidity...

The myth that R. Kahn taught J M Keynes the multiplier,so that without Kahn's contribution,there would have been no possibility of Keynes having written the General Theory in 1936,like the myth that there is no IS-LM mathematical model in the General Theory , can be traced to deliberate canards...

Investopedia's “What is the Keynesian Multiplier “ is fundamentally flawed and needs to be completely rewritten in order to eliminate a number of errors of omission and commission concerning Richard Kahn and J M Keynes.First,Richard Kahn's article ,published in 1931 in the Economic...