Ramanujan's Pi Formula Took 73 Years to Prove
Ramanujan published a pi formula in 1914 with no proof. It worked. It took 73 years and an entirely new mathematical theory to explain why.
What's Breaking Through
Articles exploring the historical development and foundational concepts of calculus and mathematics.
22 articles in this topic
About this topic
This cluster examines the rich history of calculus and mathematical innovation, tracing how some of the most fundamental tools in modern mathematics were developed and refined over centuries. The articles explore pivotal moments when mathematicians overcame conceptual barriers and formalized ideas that had long seemed intuitive or impossible. At the heart of this exploration is the story of how calculus emerged as a rigorous discipline, with figures like Isaac Newton playing crucial roles in both advancing the field and demonstrating its practical applications. These pieces reveal how mathematical breakthroughs often involve not just new formulas, but new ways of thinking about problems that previously seemed unsolvable.
One key theme across these articles is the relationship between everyday formulas and the deeper mathematical structures they represent. Many formulas that students memorize in school contain hidden mathematical principles—particularly the ideas of differentiation and integration that form the bedrock of calculus. This connection shows how calculus didn't emerge from nowhere but rather represents a formalization and extension of patterns mathematicians observed. Additionally, the cluster addresses one of mathematics' most notorious conceptual problems: division by zero. The resolution of this issue through rigorous mathematical frameworks represents a turning point in how mathematicians approached undefined operations and edge cases, leading to more robust and reliable mathematical systems.
Newton's work on calculating pi exemplifies how calculus became a tool for solving concrete problems. Rather than relying on geometric approximations or infinite series based on intuition, calculus provided systematic methods for computing values with remarkable precision. These articles collectively demonstrate that the history of mathematics is not merely about discovering isolated facts, but about developing increasingly sophisticated frameworks for understanding change, infinity, and the relationships between quantities. This historical perspective helps illuminate why calculus is structured the way it is and how it transformed mathematical practice across multiple disciplines.
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Ramanujan published a pi formula in 1914 with no proof. It worked. It took 73 years and an entirely new mathematical theory to explain why.
Mathematician Richard Elwes explains Khinchin's constant — 2.685 — a number that emerges from almost every irrational number, yet can't be proven for any specific one.
Michael Penn's video reveals how complex number equations secretly encode every conic section—and raises a real question about how we sequence mathematical knowledge.
Michael Penn's latest integral builds two lemmas—a Fourier-style series and a Feynman ODE—then snaps them together into an arctanh surprise.
The Collatz conjecture is two rules long and 89 years unsolved. Here's why the math that almost proves it is the same math that already fails it.
Two climbers, one rule: stay at the same height. A deceptively simple constraint leads to a proof that hinges on graph theory and one critical word: finite.
DIBEOS unpacks the seven indeterminate forms in calculus—0/0, ∞/∞, and more—and why mastering limits matters far beyond the classroom.
At 17, Hannah Cairo overturned the Mizohata-Takeuchi conjecture using a hypercube and a coin diagram. Here's what she actually did—and why it matters.
Michael Penn's 31-minute video walks through seven distinct proofs that the harmonic series diverges—from a 1350 grouping trick to a prime-number infinite product.
Gary Explains got an original integer sequence accepted into the OEIS by XOR-ing numbers in loops. Here's why that's genuinely fascinating—and what it connects to.
Newton didn't set out to calculate pi—he built a universal method for finding areas under curves. Pi was just what came out when he tested it on a circle.
Michael Penn's eight-minute walkthrough shows how a limit of an integral, carefully disassembled, quietly converges to gamma—one of mathematics' most elusive constants.
Conway's Soldiers is a deceptively simple game that no one can win — not with infinite pieces. Here's the golden ratio proof that seals the deal.
Why does differentiating πr² give 2πr? The answer reveals the deepest structural idea in mathematics—and it was hiding in plain sight all along.
Harvey Friedman spent 60 years proving that ordinary math can't be trusted. His work in reverse mathematics may be the most unsettling idea in modern logic.
A children's counting game hides a degree-71 polynomial. What John Conway's slow, patient method reveals about how real insight actually works.
For 150 years, calculus worked perfectly on broken logic. Here's the fascinating story of how mathematicians finally fixed it—and what a bishop had to do with it.
Chaitin's Omega encodes answers to every mathematical question—yet its digits are provably uncomputable. Here's what that actually means, and why it matters.
Neil Sloane and Jonas Karlsson's two-color knight placement problem produces stunning emergent order from brutally simple rules. Here's what actually happens.
A math professor's classroom moment reveals why the Rogers-Ramanujan identity—linking partition types through generating functions—is genuinely surprising and beautiful.
A mathematician walks through the combinatorics of Rubik's Cubes, from 43 quintillion states to 10^349—and the numbers stop feeling like numbers.
A Polish mathematician claims all math operations can collapse into one function. It's elegant, it's correct, and it reveals something strange about simplicity.