Supermarket opening times over the May bank holiday can vary from store to store (Picture: In Pictures via Getty Images) The May bank holiday is upon us which is great if you are one of the lucky ...

The Journal of Business, Vol. 75, No. 1 (January 2002), pp. 33-66 (34 pages) Before establishing the next proposition I state the following lemma, which was established by Sobel (1984). It shows that ...