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Kevin Hartnett

Kevin Hartnett is a senior writer at Quanta Magazine covering mathematics and computer science. His work has been collected in the the “Best Writing on Mathematics” series in 2013 and 2016. He also writes “Brainiac,” a weekly column for the Boston Globe’s Ideas section.

John Conway Solved Mathematical Problems With His Bare Hands

The legendary mathematician, who died on April 11, 2020 was curious, colorful and one of the greatest problem-solvers of his generation.

April 20, 2020

Graced With Knowledge, Mathematicians Seek to Understand

A landmark proof in computer science has also solved an important problem called the Connes embedding conjecture. Mathematicians are working to understand it.

April 10, 2020

‘Rainbows’ Are a Mathematician’s Best Friend

“Rainbow colorings” recently led to a new proof. It’s not the first time they’ve come in handy.

March 20, 2020

For Fluid Equations, a Steady Flow of Progress

A startling experimental discovery about how fluids behave started a wave of important mathematical proofs.

January 17, 2020

Google and IBM Clash Over Milestone Quantum Computing Experiment

Today Google announced that it achieved “quantum supremacy.” Its chief quantum computing rival, IBM, said it hasn’t. The disagreement hinges on what the term really means.

October 24, 2019

Mathematicians Begin to Tame Wild ‘Sunflower’ Problem

A major advance toward solving the 60-year-old sunflower conjecture is shedding light on how order begins to appear as random systems grow in size.

October 22, 2019

Computers and Humans ‘See’ Differently. Does It Matter?

In some ways, machine vision is superior to human vision. In other ways, it may never catch up.

September 20, 2019

Quantum Supremacy Is Coming: Here’s What You Should Know

Researchers are getting close to building a quantum computer that can perform tasks a classical computer can’t. Here’s what the milestone will mean.

July 20, 2019

A New Law to Describe Quantum Computing’s Rise?

Neven’s law states that quantum computers are improving at a “doubly exponential” rate. If it holds, quantum supremacy is around the corner.

July 10, 2019

How Randomness Can Make Math Easier

Randomness would seem to make a mathematical statement harder to prove. In fact, it often does the opposite.

July 10, 2019

A New Approach to Multiplication Opens the Door to Better Quantum Computers

In practice, quantum computers can’t run many programs that classical computers can, because they’re not allowed to selectively forget information. A new algorithm for multiplication shows a way around that problem.

May 7, 2019

Smaller Is Better: Why Finite Number Systems Pack More Punch

Recent progress on the “sum product” problem recalls a celebrated mathematical result that revealed the power of miniature number systems.

February 28, 2019