How to Solve Math Problems: Polya’s Method and Beyond
George Polya's four-step method has guided mathematicians since 1945. Understand the problem, devise a plan, carry it out, look back.…
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Bhaskara II’s Lilavati: Complete Reference Guide (2026 Edition + PDF)
Lilavati is a 12th-century mathematics treatise that reads like poetry — arithmetic, algebra, and geometry wrapped in riddles about bees,…
Poincare and Einstein, and the History of Relativity
Poincare and Einstein reached overlapping relativity results in 1905, but their physical interpretations differed. Follow the chronology and compare their…
Collatz Conjecture: Problem Nobody Can Solve and Don’t Care to
Pick any positive integer. If it's even, halve it. If it's odd, triple it and add one. Repeat. You always…
Dirichlet’s Theorem and Liouville’s Extension of Dirichlet’s Theorem
The Dirichlet theorem connects the Gamma and Beta functions to evaluate complex multiple integrals. Liouville extended it further, making it…
Lindemann Theory of Unimolecular Reactions Explained
Unimolecular reactions seem impossible. A single molecule just reacts on its own? Where does the energy come from? Lindemann solved…
Mystery of Missing Money – 1 Rupee by Shakuntala Devi
Shakuntala Devi's missing money puzzle is a classic in mathematical logic. Two women sell marbles at different rates. When they…
Poincare Conjecture: Solved! And an Interesting Story
In 1904, Poincare asked: if every loop on a 3D shape can be shrunk to a point, must it be…
Cosmic Radiation Explained: Sources, Showers, and Effects
Cosmic radiation is made of high-energy particles from space. Learn where cosmic rays come from, how air showers form, and…
Rayleigh-Jeans Law and The Ultraviolet Catastrophe Explained
Lord Rayleigh and James Jeans tried to explain blackbody radiation using classical physics. They failed spectacularly. Their formula worked at…
Notes on Wien’s Displacement Law and Distribution Law
Wien's displacement law links a blackbody's temperature to the wavelength where its spectrum peaks. Learn the formula, examples, limits, and…
Derivative of x squared is 2x or x ? Where is the fallacy?
Here's a mathematical fallacy that trips up even sharp students. Can you prove that the derivative of x squared is…