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Author

Matthias Lanzinger

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2 papers indexed here

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Preprint Sep 2026

FPT=PTIME for Homomorphism Problems on Sparse-Incidence and Bounded-Independence Patterns

Assuming the Exponential Time Hypothesis (ETH), fixed-parameter tractability and polynomial-time solvability coincide for homomorphism problems specified by classes of pattern hypergraphs of bounded incidence degeneracy or bounded primal independence number. In both cases, tractability is characterised by bounded fract...

Matthias Lanzinger · 0 citations
Preprint Sep 2026

Unifying and Extending Strong Simulation of Quantum Circuits

We establish functional aggregate queries (FAQs) as a unifying language for exact classical simulation of quantum circuits. A circuit becomes a sum-product query: factors encode gates, internal wire variables are aggregated, and free boundary variables index transition amplitudes. The central insight is that distinct s...

F. Geerts, Rihan Hai, Matthias Lanzinger et al. · 0 citations

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