Knotty edukashun problems

 Alongside the Poincaré Conjecture, which has been solved, there are six other Millennium Prize Problems—each carrying a $1 million reward from the Clay Mathematics Institute for a correct solution:

  1. Riemann Hypothesis Predicts a deep pattern in the distribution of prime numbers, tied to the zeros of the Riemann zeta function.

  2. P vs NP Problem Asks whether every problem whose solution can be quickly verified can also be quickly solved—central to computer science and cryptography.

  3. Navier–Stokes Existence and Smoothness Concerns whether solutions to the equations governing fluid motion always exist and behave nicely in three dimensions.

  4. Yang–Mills Existence and Mass Gap Seeks a rigorous mathematical foundation for quantum field theories that describe fundamental forces, particularly the existence of a mass gap.

  5. Hodge Conjecture A question in algebraic geometry about which types of shapes (Hodge classes) arise from geometric objects.

  6. Birch and Swinnerton-Dyer Conjecture Relates to the number of rational solutions on elliptic curves and their connection to a complex function called the L-function.

Only the Poincaré Conjecture has been solved—by Grigori Perelman in the early 2000s, though he famously declined the prize. The rest remain open, tantalising challenges at the frontier of mathematics.


🧠 Mathematics

  • Hilbert’s 23 Problems (1900): A legendary list that shaped 20th-century math. Some, like the Riemann Hypothesis, remain unsolved.

  • Landau’s Problems (1912): Four deceptively simple number theory questions—none fully resolved.

  • Erdős Problems: Over 900 open problems posed by Paul Erdős, many with cash prizes attached.

  • Smale’s Problems (1998): Eighteen problems for the 21st century, spanning chaos theory, computation, and geometry.

🔬 Science & Physics

  • The 18 Unsolved Mysteries in Physics: Includes dark matter, dark energy, quantum gravity, and the arrow of time.

  • The Hard Problem of Consciousness: How and why do physical processes in the brain give rise to subjective experience?

  • Protein Folding Problem: Despite AI advances, the full mechanism of how proteins fold so rapidly remains elusive.

🧪 Computer Science & Logic

  • P vs NP Problem: Can every problem whose solution can be verified quickly also be solved quickly?

  • The Halting Problem: Proven undecidable—no algorithm can determine whether every program halts or loops forever.

  • Collatz Conjecture: A simple arithmetic sequence that no one can prove always ends in 1.

🧭 Cross-Disciplinary Notebooks

  • Kourovka Notebook: A living document of open problems in group theory.

  • Dniester and Sverdlovsk Notebooks: Collections of unsolved problems in algebra and semigroup theory.

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