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Related Articles from SNS
Accelerated Fourier SAT (AFSAT): Fully Realising a GPU-based Symmetric Pseudo-Boolean SAT Solver
Announce Type: new Abstract: We present Accelerated Fourier SAT (AFSAT), a GPU-accelerated solver for pseudo-Boolean satisfiability based on continuous local search (CLS). AFSAT realises the proof-of-concept approach, FastFourierSAT, into a fully-engineered solver supporting any heterogeneous mixture of symmetric constraint types and lengths within a single problem instance. Using the JAX compiler, AFSAT leverages pure function composition, automatic vectorisation, automatic differentiation,...
A Stable SBP-SAT FDTD Subgridding Method Without Region Split
arXiv:2604.14618v2 Announce Type: replace Abstract: A provably stable summation-by-parts simultaneous approximation term (SBP-SAT) finite-difference time-domain (FDTD) subgridding method without region split is proposed. By designing projection SBP operators tailored for embedded topological features and deriving the corresponding SAT boundary conditions, this approach guarantees long-time stability through discrete energy analysis. Unlike conventional SBP-SAT FDTD subgridding techniques...
Discovering heuristics in a complex SAT solver with large language models
arXiv:2507.22876v2 Announce Type: replace Abstract: The Satisfiability problem (SAT) is fundamental in computational complexity theory and has a wide range of industrial applications. Optimizing modern SAT solvers in real-world settings is quite challenging due to their intricate architectures. While automatic configuration frameworks have been developed, they rely on manually constrained search spaces.
Exponential Quantum Space Advantage for Approximating Max-$k$SAT in the Streaming Setting
Announce Type: new Abstract: In this paper, we give a one-pass quantum streaming algorithm for Max-$k$SAT that uses $\operatorname{polylog}(n)$ space and achieves a $0.7172$-approximation on instances with $n$ variables. In contrast, prior work by Chou, Golovnev, and Velusamy (FOCS 2020) implies that achieving an approximation ratio better than $\sqrt{2}/2 \approx 0.7071$ for Max-$k$SAT requires $\Omega(\sqrt{n})$ space for any classical streaming algorithm. Therefore, it yields an...
'The movie has tremendous heart': We sat down with the director of 'Masters of the Universe' to learn how he found 'the power' for the new He-Man
'The movie has tremendous heart': We sat down with the director of 'Masters of the Universe' to learn how he found 'the power' for the new He-Man "My compass was about trying to please the eight-year-old version of myself who discovered He-Man for the first time." "Masters of the Universe" brings He-Man to life for a new generation, and director Travis Knight is taking this responsibility seriously. "It is very personal to so many people," Knight told Space.
Actually, the SAT Was Necessary After All
Zvezdelina Stankova has taught mathematics at UC Berkeley for nearly three decades. But in 2023, while teaching introductory calculus for the first time since the beginning of the coronavirus pandemic, she noticed that something was quite wrong. The bottom 25 percent of students were not just struggling with the coursework, Stankova told me; “people were in freefall.”
Transforming and Encoding FTS for SAT Solving: What Helps, What Hurts (Extended Version)
arXiv:2605.30563v1 Announce Type: new Abstract: Factored tasks are a classical planning representation that extends SAS+ with limited forms of disjunctive preconditions, conditional effects, and angelic nondeterminism. This allows for a more compact representation of tasks than traditional formalisms such as STRIPS or SAS+, and supports a wide range of task transformations. However, existing planning approaches for factored tasks have been limited to heuristic search methods.
Experience: I sat under an oak tree every day for a year
After a period of burnout, I realised that nature knows what you need, and is always ready to offer it – you just have to be quiet enough to receive itIn 2022 I moved to Clevedon, near Bristol. As soon as I saw the oak tree behind my flat, I started sitting under it. It’s not in some beautiful, remote place – it’s on an urban hill surrounded by grassland – but as a solitary tree on the side of a hill, it drew my attention.
Experience: I sat under an oak tree every day for a year
After a period of burnout, I realised that nature knows what you need, and is always ready to offer it – you just have to be quiet enough to receive itIn 2022 I moved to Clevedon, near Bristol. As soon as I saw the oak tree behind my flat, I started sitting under it. It’s not in some beautiful, remote place – it’s on an urban hill surrounded by grassland – but as a solitary tree on the side of a hill, it drew my attention.
Experience: I sat under an oak tree every day for a year
After a period of burnout, I realised that nature knows what you need, and is always ready to offer it – you just have to be quiet enough to receive itIn 2022 I moved to Clevedon, near Bristol. As soon as I saw the oak tree behind my flat, I started sitting under it. It’s not in some beautiful, remote place – it’s on an urban hill surrounded by grassland – but as a solitary tree on the side of a hill, it drew my attention.