The continuum hypothesis, one of mathematics' most famous riddles, may finally have been cracked after 140 years. But the proof involves delving deep not only into the intricacies of infinity, but perhaps beyond mathematics as we know it. A respected US mathematician believes he has cracked it. What's more, he claims to have arrived at the solution not by using mathematics as we know it, but by building a new, radically stronger logical structure: a structure he dubs "ultimate L". Read more