Tootfinder

Here’s a mind-blowing experiment that you can try at home:
Gather some children’s blocks and place them on a table.
Take one block and slowly push it over the table’s edge, inch by inch, until it’s on the brink of falling.
If you possess patience and a steady hand, you should be able to balance it so that exactly half of it hangs off the edge.
Nudge it any farther, and gravity wins.
Now take two blocks and start over.
Stacking one on top of the other, how…

This Block-Stacking Math Problem Has a Preposterous Solution You Need to See to Believe — Scientific American
In principle, this impossible math allows for a glue-free bridge of stacked blocks that can stretch across the Grand Canyon—and into infinity Amanda Montañez Math Here’s a mind-blowing experiment that you can try at home: Gather some children’s blocks and place them on a table. Take one block and slowly push it over the table’s edge, inch by inch, until it’s on the brink of falling. If you possess patience and a steady hand, you should be able to balance it so that exactly half of it…

This https://arxiv.org/abs/2505.23199 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Chaos in the holographic matrix models for meson and baryon
In recent years, the investigation of chaos has become a bridge connecting gravity theory and quantum field theory, especially within the framework of gauge-gravity duality. In this work, we study holographically the chaos in the matrix models for meson and baryon, which are derived from the $\mathrm{D4}/\mathrm{D6}/\overline{\mathrm{D6}}$ approach as a top-down holographic model for QCD. Since these matrix models can be simplified into coupled oscillator models with special parameters, we anal…