Mathematicians have finally solved a geometry problem that has puzzled the field for decades ... “It’s just a problem about how straight lines can intersect one another,” explains Jonathan Hickman, a ...

A new proof has removed that obstacle ... but it may also have important applications throughout geometry and topology. The notion of mean curvature flow was introduced in the 1950s as a way to ...

An importer will now be required to submit ‘proof of origin’ as against ‘certificate of origin’ to preferential rate of duty in terms of a trade agreement. Experts feel such a move is ...