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from my link log —
Middle-square Weyl sequence PRNG.
https://arxiv.org/abs/1704.00358
saved 2025-10-28 https://dotat.at/:/GS290.html

Middle-Square Weyl Sequence RNG
In this article, we propose a new implementation of John von Neumann's middle-square random number generator (RNG). A Weyl sequence keeps the generator running through a long period.

Quantum Filtering at Finite Temperature
John Gough
https://arxiv.org/abs/2510.04967 https://arxiv.org/pdf/2510.04967

Quantum Filtering at Finite Temperature
We pose and solve the problem of quantum filtering based on continuous-in-time quadrature measurements (homodyning) for the case where the quantum process is in a thermal state. The standard construction of quantum filters involves the determination of the conditional expectation onto the von Neumann algebra generated by the measured observables with the non-demolition principle telling us to restrict the domain (the observables to be estimated) to the commutant of the algebra. The finite-tempe…