IN a paper by Prof. C. G. Knott on “Recent Innovations in Vector Theory,” of which an abstract has been given in NATURE (vol. xlvii. pp. 590–593; see also a minor abstract on p. 287), the doctrine ...

This method of approach to the quaternion vector analysis is practically that adopted by Prof. Joly in his “Manual of Quaternions.” The method is unsatisfactory, because it makes too great a demand at ...

We propose a classical approach to estimate factor-augmented vector auto-regressive (FAVAR) models with time variation in the parameters. When the time varying FAVAR model is estimated by using a ...

Macro-economic consequences of large currency depreciations among the crisis-hit Asian economies varied from one country to another. Inflation did not soar after the Asian currency crisis of 1997-98 ...