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Plus Magazine
June 2008 The Plus new writers award 2008 Read the winning entries in this issue of Plus ...
plusadmin  16 Apr 2010  14:05

Plus Advent Calendar Door #7: Seven is lucky!
... is a mathematical recipe for finding lucky numbers, and 7 is one of them. The recipe goes like this. Write down all the positive ... all even numbers, leaving only the odds: 1, 3, 5, 7, 9, 11, 13, 15, ... . The next number on the list after 1 is 3, so ...
Marianne  7 Dec 2013  11:14  0 comments

Not just a matter of time: Measuring complexity
... select the file with that index on its tab. Retrieving file 7, say, is no more difficult than retrieving file 77: a quick visual scan ...
Marianne  15 Jan 2018  14:32  0 comments

Why 7 is special
... from around the world, he found that the winner was ... 7! We rather like 7 ourselves and decided that this is because 7 is the first prime number that ...
Marianne  1 Jul 2014  12:14  0 comments

Unveiling the Mandelbrot set
... = 26 2 + 1 = BIG x 6 = BIGGER x 7 = REALLY BIG, and we see that points in this orbit get bigger and ... c = 1.6 (Chaotic behaviour) c = 1.75 (Tends to period 3) c = 1.8 (Chaotic behaviour close to ...
plusadmin  22 Nov 2017  13:44  7 comments

Missing a complex opportunity
... drawn with the values a =10, b =2, c =9 and h =7. He came up with this tidy formula (you can see how here ) for ... easily calculate that the height, , of such a shape was 7, using his formula: ...
Rachel  18 Dec 2017  12:13  0 comments

Win money with magic squares
... 29 2 41 2 37 2 17 2 31 2 79 2 32 2 59 2 28 2 23 2 61 2 ... known magic squares of cubes are 8×8 squares constructed in 2008 by Walter Trump, a German teacher of mathematics. We do not know any 4×4, ...
Marianne  22 Jul 2010  10:57  8 comments

Plus Advent Calendar Door #7: Dynamic populations
There are nearly 7 billion of us now, but how many will there be by Christmas 2111? Our sister ...
Marianne  7 Dec 2011  16:19  0 comments

Sexual statistics
... had 14 sexual partners, on average, and women 7. Studies have suggested that women give lower numbers when they fear the ...
Marianne  19 Dec 2017  19:01  5 comments

Bach and the musical torus
... II of Prussia (Frederick the Great) in Potsdam on May 7, 1747. The King, who was himself a musician, proposed a theme on which Bach, ... bottom voice) exactly, except one measure later and a fifth (7 halfsteps) higher. The bottom voice starts on the C below middle C; the ...
Marianne  12 Dec 2017  12:24  2 comments