Tootfinder

Archaeologists in Peru have found new evidence showing how the
oldest known civilization in the Americas adapted and survived a climate catastrophe without resorting to violence.
A team led by the renowned Peruvian archaeologist Ruth Shady, 78,
concluded that about 4,200 years ago, severe drought forced the population to leave the ancient city of Caral, and resettle nearby.
In the new settlements, they left intriguing friezes depicting victims of a famine with message…

Two bases suffice for QMA1-completeness
Henry Ma, Anand Natarajan
https://arxiv.org/abs/2509.24390 https://arxiv.org/pdf/2509.24390

Two bases suffice for QMA1-completeness
We introduce a basis-restricted variant of the Quantum-k-SAT problem, in which each term in the input Hamiltonian is required to be diagonal in either the standard or Hadamard basis. Our main result is that the Quantum-6-SAT problem with this basis restriction is already QMA1-complete, defined with respect to a natural gateset. Our construction is based on the Feynman-Kitaev circuit-to-Hamiltonian construction, with a modified clock encoding that interleaves two clocks in the standard and Hadam…