**A** rather dull puzzle this week:

Show that, for any integery, (√3-1)^{2y}+(√3+1)^{2y}is an integer multiple of a power of two.

**I** just have to apply Newton’s binomial theorem to obtain the result. What’s the point?!

an attempt at bloggin, nothing more…

**A** rather dull puzzle this week:

Show that, for any integery, (√3-1)^{2y}+(√3+1)^{2y}is an integer multiple of a power of two.

**I** just have to apply Newton’s binomial theorem to obtain the result. What’s the point?!

**I** do not know if it is a coincidence or if publishers were competing for the same audience: after reviewing ** The universe in zero word: The story of mathematics as told through equations**, in this post (and in CHANCE, to appear in 25(3)!), I noticed Ian Stewart’s

**I** am quite glad I did so, as I tremendously enjoyed this book, both for its style and its contents, both entertaining and highly informative. This does not come as a big surprise, given Stewart’s earlier books and their record, however this new selection and discussion of equations is clearly superior to ** The universe in zero word**! Maybe because it goes much further in its mathematical complexity, hence is more likely to appeal to the mathematically inclined (to borrow from my earlier review). For one thing, it does not shy away from inserting mathematical formulae and small proofs into the text, disregarding the risk of cutting many halves of the audience (I know, I know, high powers of (1/2)…!) For another,

** I**n opposition with ** The universe in zero word**, formulas are well-presented, each character in the formula being explained in layman terms. (Once again, the printer could have used better fonts and the LaTeX word processor.) The (U.K. edition, see tomorrow!) cover is rather ugly, though, when compared with the beautiful cover of

**T**he** universe in zero words: The story of mathematics as told through equations** is a book with a very nice cover: in case you cannot see the details on the picture, what looks like stars on a bright night sky are actually equations discussed in the book (plus actual stars!)…

**T**he** universe in zero words** is written by Dana Mackenzie (check his website!) and published by Princeton University Press.