A decades-old proof showed that seven shuffles are enough to mix up a deck of cards. But it requires you to cut the deck with the precision of a professional magician. A new proof gets around that ...

In 1992, mathematicians famously proved that seven “riffle shuffles” (opens a new tab) — the kind where a player splits a deck of cards into two piles, then uses their thumbs to interleave them back ...

Array CGH has been implemented using a wide variety of techniques. The initial approaches used arrays with elements produced by spotting DNA obtained directly from large-insert genomic clones such as ...

Most people treat Excel as a rigid calculator, completely missing its capacity for chaos. Excel's built-in randomization tools can generate numbers, shuffle existing lists, and build mock timelines in ...