# Talk:Harrod–Domar model

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WikiProject Economics (Rated Start-class, Low-importance)

## short version

The description given is the short version. In the long version there's also an expected rate of growth. E. --203.214.140.108 02:54, 30 June 2006 (UTC)

## Solow growth model

This is not a Harrod- Domar model. it looks more like a Solow growth model. —Preceding unsigned comment added by Aksana C (talkcontribs) 15:26, 6 November 2007 (UTC)

Agreed. This article relates to the "textbook"-version of the Harrod-Domar model. Here we see a neoclassical relation between investment and saving (Saving determines the investment). However, Harrod and Domar build their arguments on Keynes, talking about the capacity effects of investment. In their approach, Investment can be distinct from Saving, which results in changes in the capacity utilization and the "growth on knife's edge". Steindl (1981) therefore calls the Solow (1956) interpretation of Harrod's and Domar's approaches a "freak". This is layed out comprehensively in Hein, E. (2014): Distribution and Growth after Keynes, A Post-Keynesian Guide, Chapter 2. — Preceding unsigned comment added by 194.94.23.245 (talk) 15:40, 17 April 2018 (UTC)

## math notation cleanup

I found this:

${\displaystyle \ Y=cK\Rightarrow dlog(Y)=dlog(c)+dlog(K)}$.

I changed it to this:

${\displaystyle \ Y=cK\Rightarrow d\log(Y)=d\log(c)+d\log(K).}$

Notice (1) the different appearance of the period at the end (this may vary between browsers, but on mine, the problem with the first version is very conspicuous); and (2) the different appearance of "dlog"; that one should be conspicuous on all browsers; the first version is quite incorrect in standard TeX usage.

WP:MOSMATH does exist. Michael Hardy (talk) 10:54, 5 September 2009 (UTC)

I removed the periods entirely. They are unnecessary and cause confusion when the dot notation is used for derivatives. I can revert the edit if anyone has a problem with this. KropotkinSchmopotkin (talk) 08:08, 23 August 2020 (UTC)