October 15th, 2024

Big Advance on Simple-Sounding Math Problem Was a Century in the Making

Hector Pasten, a Chilean mathematician, advanced number theory by proving that the sequence n² + 1 always contains a large prime factor, impacting the abc conjecture and improving 1930s results.

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Big Advance on Simple-Sounding Math Problem Was a Century in the Making

Hector Pasten, a mathematician from Chile, has made significant progress on a long-standing problem in number theory related to the sequence of numbers defined by n² + 1. This sequence has intrigued mathematicians for over a century due to its complex relationship between addition and multiplication. Pasten's breakthrough came unexpectedly while he was procrastinating on writing an exam, leading him to explore the prime factors of the sequence. He successfully demonstrated that these numbers must always have at least one large prime factor by embedding information about the prime factors into an elliptic curve equation. His proof, which was accepted by the journal Inventiones Mathematicae, marks a notable advancement in understanding the growth of prime factors in this sequence, improving upon results established in the 1930s. Additionally, Pasten's methods have implications for the abc conjecture, a famous unsolved problem in mathematics that also examines the interplay between addition and multiplication. His work is seen as a promising new direction in a field that has seen little progress on these questions for decades.

- Hector Pasten solved a long-standing problem in number theory related to the sequence n² + 1.

- His proof shows that numbers in this sequence must have at least one large prime factor.

- Pasten's work improves upon results from the 1930s regarding the growth of prime factors.

- His techniques also contribute to the abc conjecture, a significant unsolved problem in mathematics.

- The proof was accepted by Inventiones Mathematicae in a notably short time frame.

Link Icon 3 comments
By @youoy - about 19 hours
I will always find these type of explorations fascinating. Number theory is so mysterious. I liked these two sentences from the article:

> “Mathematics is not just about proving theorems — it’s about a way to interact with reality, maybe.”

This one I like it because in the current trend of trying to achieve theorem proving in AI only looking at formal systems, people rarely mention this.

And this one:

> Just what will emerge from those explorations is hard to foretell. “That’s the problem with originality,” Granville said. But “he’s definitely got something pretty cool.”

When has that been a "problem" with originality? Hahah but I understand what he means.

By @nomilk - about 19 hours
How do mathematicians come to focus on seemingly arbitrary quesrions:

> another asks whether there are infinitely many pairs of primes that differ by only 2, such as 11 and 13

Is it that many questions were successfully dis/proved and so were left with some that seem arbitrary? Or is there something special about the particular questions mathematicians focus on that a layperson has no hope of appreciating?

My best guess is questions like the one above may not have any immediate utility, but could at any time (for hundreds of years) become vital to solving some important problem that generates huge value through its applications.

By @paulpauper - about 18 hours
I wish the math was explained better . I know the format is limited ands it will go over most people's heads but it does not do the matter justice.