Abstract: Triangular intuitionistic fuzzy numbers (TIFNs) are effective and flexible to characterize the fuzziness and uncertainty in real-world problems. The theories of TIFNs have been used in multi ...

Sure, riddles are fun if you’re a fan of clever wordplay. But there’s something so uniquely enjoyable about a good visual puzzle. So today, we’re calling all brainteaser aficionados: How many ...

In recent years, China has quietly shifted its strategy in international development cooperation. Once focused almost exclusively on bilateral assistance, Beijing now embraces triangular development ...

How a centuries-old math puzzle helped us see inside the human brain. By Steven Strogatz Photo illustrations by Jens Mortensen Each installment of “Math, Revealed” starts with an object, uncovers the ...

Math puzzles have a special way of making even the sharpest minds stop and think. A new brain teaser going around online has been challenging people to figure out the pattern hidden in a series of ...

At first glance, the 153 looks really meaningless. Yet, it has amazing mathematical properties. Moreover, it was not only explicitly mentioned in the Bible and, for various reasons, brings a smile to ...

Pythagoras was not simply interested in the number three. He was fascinated by numbers in general. He viewed them as the key to understanding the universe as a whole. His investigation into the nature ...