Breakthrough In Drawing Complex Venn Diagrams: Goes to 11
00_NOP writes "Venn diagrams are all the rage in this election year, but drawing comprehensible diagrams for anything more than 3 sets has proved to be very difficult. Until the breakthrough just announced by Khalegh Mamakani and Frank Ruskey of the University of Victoria in Canada, nobody had managed to draw a simple (no more than two lines crossing), symmetric Venn diagram for more than 7 sets (only primes will work). Now they have pushed that on to 11. And it's pretty too."
Visually, you don't really get fast useful information out of it, it's too hard to map a certain part of it to exactly which 11 regions it contains...
But useless
jsut athnoer menagiensls ltitle psrhae for you to dcoede. Why do we wtsae our tmie dnoig tihs?
The entire point of a venn diagram is a quick overview to easily be able to get an understanding about how things overlap, in what amounts and what areas. The diagrams on the linked page might be pretty, but they are in no way useful, and I doubt anyone would get more information out of it than reading the datalist it was compiled from.
At that level its just a shiny object with no substance.
But then again, with what goes on in the political world these days perhaps it's appropriate.
---- Booth was a patriot ----
(Classic SMBC cartoon)
http://www.smbc-comics.com/index.php?db=comics&id=1917
Nigel's Venn diagram goes to 11.
some "Professional Students" with a bit to much time on their hands.
Can you make one for 4 colors out of 4 spheres?
Certainly not a prime number
As a logic teacher, I welcome this discovery, and if it is just for satisfying my curiosity.
But I'm already happy if my students are able to draw a Venn diagram with 3 sets... ;-)
My brain exploded ... made quite a mess of my keyboard.
Nice and shiny. But as others have observed, it doesn't actually do much for visualizing the relationships. Up to about six sets really is my personal limit for visualizing these things at a glance. and I use a Karnaugh map for that.
IANAM but would 3D help? Since now we have 3D printers one could build a program that would make a disassemblable colored object.
Because what the internet needs is more Venn diagrams!
I agree that the 11-Venn is fairly useless as a PowerPoint slide, but Slash Dotters of all people should understand that pure mathematics often leads to applied mathematics. For example, suppose this new finding leads to improved approaches to signal multiplexing, so that you can have billions more 8G cell phones and thousands more channels of nothing-to-watch on cable and satellite TV. Or perhaps it will lead to more advanced neural networks, so that we can get Cyberdyne Systems and SkyNet up and running. Or maybe it will even lead to advances in political science that give rise to governments that are actually capable of serving the people they govern. One just never knows...
In 1989 Anthony Edwards figured out how to make Venn diagrams of arbitrary size: http://www.qandr.org/quentin/software/venn
"Dr Edwards came up with an ingenious solution based on segmenting the surface of a sphere, beginning with the equator and the 0 and the +/- 90-degree meridians. It can be extended to an arbitrary number of sets by creating wobbly lines that cross the equator - starting with the pattern of stitching found on a tennis ball. You can unwrap the sphere back onto a plane and the sets still work."
Note the words 'simple' and 'symmettric'. The abritrarly many set diagram linked acheives neither.
Either way it's pretty useless...
Many seemingly pointless exercises in math lead to surprising breakthroughs. Graph partitioning is a very active area of research. Imagine creating an index on a ultra large database with pairwise "and" condition on many pairs of fields. Then finding multiple "and" or "or" condition based records within minimal traversing and merging of the index files. Who knows it might actually lead to dramatic speed ups of queries in large data bases.
sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
It looks sort of fractal, and it reminds me of harmonics. I wonder if it could tell us anything about either.
Oh, and of course it's useless for displaying information. A list of groups and their characteristics sorted by percentage is better for that; but that doesn't mean this isn't good for something
For those that didn't catch the This Is Spinal Tap reference:
Video Proof
As others have said, I'm not sure that 11-Venn is useful for most people's comprehension, but I'd love to have it on a t-shirt. Mathematicians come up with some awesome abstract art, sometimes.
Thought VennMaster could do it already:
http://www.informatik.uni-ulm.de/ni/staff/HKestler/vennm/doc.html
Do they have any purpose other than to show some three universally reviled attributes and put a group of criticized people in the middle?
Contrary to the popular belief, there indeed is no God.
But can they do a BANANA shaped venn? http://boingboing.net/2012/07/12/just-look-at-that-banana-genom.html
It's one louder
7 is enough for Steve Miller.
Dear Slashdot: next time you want to mess with the site, add a rich-text editor for comments.
maybe it's just me...
Wow! Times have changed! When I was in college, these were called Rorschach Tests (and they were only black and white back then).
You crazy old coot.