The size of certain infinite sets has been a mystery. Now, it turns out, each one is different than the next, and they can all be ordered by size
-- Read more on ScientificAmerican.com
More...
The size of certain infinite sets has been a mystery. Now, it turns out, each one is different than the next, and they can all be ordered by size
-- Read more on ScientificAmerican.com
More...