Christmas tree

The Yule tree will remain in the tower throughout December and the tower is only closed on Christmas Eve, Christmas Day and Boxing Day.

We shall rather use a coupling method: in Section 2 we sketch the main steps of the construction, on the same probability space, of a random Lyndon tree, and of two well-known trees, the binary search tree of a random uniform permutation, and a Yule tree, in such a way that the height of the Lyndon tree is closely related to some statistics of the two other trees.

Since solstice is a celebration of Nature and of light and living, your Yule tree should, ideally, be a living one.

But Sharp - whose Yule Tree Farms has fields in Clackamas, Yamhill, Polk and Marion counties - and farmers like him are finding ways to cut back on herbicides and pesticides, he said.

Get the ultimate cool Yule tree from Debenhams with this spiral table decoration priced at pounds 10.