Estimations Meet Reality and Your Budget Might Adapt

Budgeting for a year of conferences, trips, or family plans is a ritual of estimation and compromise. You sketch rough costs for flights, hotels, and registrations, then you improvise as receipts arrive and prices wobble. A new study turns this everyday uncertainty into a mathematics of decision making. It asks a deceptively simple question: if…

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Do Ant Trails Reveal Hidden Equations?

The study of how countless tiny agents organize themselves into bigger patterns is one of science scripts that reads like a nature documentary and a mathematics textbook at once. In the latest work by Maria Bruna, Markus Schmidtchen, and Oscar de Wit, a team of researchers from the University of Cambridge digs into a bold…

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Battery-free backscatter dodges interference with frequency-space division across bands

Across modern factories, fleets of tiny sensors monitor temperature, vibration, and machine health, often powered by harvested energy rather than batteries. These battery-free backscatter tags don’t generate their own signals; they reflect the reader’s excitation and ride along on the same airwaves. It’s a quiet enabler of pervasive sensing on the factory floor, but once…

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AI’s New Eyes: How Smart Surfaces See and Talk at Once

Imagine a world where our Wi-Fi networks also function as radar systems, simultaneously communicating data and sensing their surroundings. This isn’t science fiction; it’s the rapidly approaching reality of integrated sensing and communication (ISAC) networks. The Challenge of Seamless Sensing and Communication Creating truly effective ISAC networks presents significant hurdles. One major challenge is the…

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How Many Positive Coefficients Guarantee a Positive Modular Form?

Imagine a mathematical object, a modular form, whose coefficients are like the echoes of a hidden musical score. These coefficients, integers representing quantities from partitions to quadratic forms, are crucial to understanding the form’s deep mathematical structure. But what if, instead of carefully calculating each coefficient, we could establish that a modular form’s coefficients are…

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Cosmic Bubbles: Untangling the Universe’s Earliest Echoes

Peering into the Primordial Soup The universe’s infancy, a period of hyper-rapid expansion known as inflation, remains shrouded in mystery. We can’t directly observe this epoch, but its ghostly imprint lingers in the subtle fluctuations of the cosmic microwave background (CMB) and the large-scale structure of the universe. Cosmologists painstakingly analyze these faint signals, hoping…

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AI’s Secret Weapon: A Hidden Competition Shaping Its Behavior

A New Paradigm for Understanding AI For years, scientists have grappled with the complexities of artificial intelligence, seeking to understand how these systems learn and make decisions. A recent study from the Ruhr-Universität Bochum and the Bulgarian Academy of Sciences, led by Yacine Barhoumi-Andréani and Peter Eichelsbacher, offers a groundbreaking new perspective. It unveils a…

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Cell-Free Massive MIMO: A New Algorithm for Fairer, Faster Wireless

The Quest for Fairer Wireless Imagine a world where your smartphone’s connection speed never suffers, no matter how many people are streaming videos or downloading files around you. That’s the promise of cell-free massive MIMO (multiple-input and multiple-output), a revolutionary approach to wireless communication. But achieving this seamless, high-speed experience isn’t as simple as just…

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