The last course Enrico Fermi taught before his death was introductory quantum mechanics, in the winter and spring quarters of 1954. Here is the last exam Fermi gave with his own solutions for each problem.
Mathematics.
A close look at the infinite swirling of the Rössler Attractor, which exhibits chaotic dynamics and fractal properties. Like a cosmic taffy-pulling machine.
By Marcus Volz, https://t.co/ksHRUDAqeL, Used with permission.
continuous water stream bridges aluminum foil and a blue LED, completing the circuit and causing the LED to glow, illustrating fluid-based conductivity.
Mathematics.
→ Cellular automata zoom. Worlds within Worlds. Entities at different size scales.
Credit: I didn’t upload this video to 𝕏. I’m pointing to a video residing in the 𝕏 stream of “json (dadtime)”, 𝕏 ID “JsonBasedman” (Nov 23, 2025).
No one made more money in trading than Jim Simons.
Not Buffett. Not Soros. Not Dalio.
His hedge fund was so powerful that he shut it down to outsiders.
$100 in 1988 grew to $400M in 30 years.
Here’s how a mathematician became the world’s greatest trader:
Mathematics.
→ Möbius Strip Maze. Trying to remove the disc from the strip.
Credit: I didn’t upload this video to 𝕏. I’m pointing to a video residing in the 𝕏 stream of “Ayu D. Palupi”, 𝕏 ID “ayu_DPalupi” (Jan 23, 2026).