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In this paper, we present a new method for calculating linear absorption spectra for large molecular aggregates, called dyadic adaptive HOPS (DadHOPS). This method combines the adaptive HOPS (adHOPS) framework, which uses locality to…

We compare a couple of notions of differential form on singular complex algebraic varieties, and relate them to the outermost associated graded spaces of the Hodge filtration of ordinary and intersection cohomology. In particular, we…

Algebraic Geometry · Mathematics 2026-05-18 Donu Arapura , Scott Hiatt

In this work, we introduce a novel abstract framework for the stability and convergence analysis of fully coupled discretisations of the poroelasticity problem and apply it to the analysis of Hybrid High-Order (HHO) schemes. A relevant…

Numerical Analysis · Mathematics 2019-12-10 Lorenzo Botti , Michele Botti , Daniele A. Di Pietro

Abstract separation logics are a family of extensions of Hoare logic for reasoning about programs that manipulate resources such as memory locations. These logics are "abstract" because they are independent of any particular concrete…

Logic in Computer Science · Computer Science 2018-03-28 Zhé Hóu , Ranald Clouston , Rajeev Goré , Alwen Tiu

The notion of a context in formal concept analysis and that of an approximation space in rough set theory are unified in this study to define a Kripke context. For any context (G,M,I), a relation on the set G of objects and a relation on…

Logic · Mathematics 2022-04-12 Prosenjit Howlader , Mohua Banerjee

We have previously published the Isabelle/HOL formalization of a general theory of syntax with bindings. In this companion paper, we instantiate the general theory to the syntax of lambda-calculus and formalize the development leading to…

Logic in Computer Science · Computer Science 2021-07-27 Lorenzo Gheri , Andrei Popescu

Weak memory presents a new challenge for program verification and has resulted in the development of a variety of specialised logics. For C11-style memory models, our previous work has shown that it is possible to extend Hoare logic and…

Programming Languages · Computer Science 2020-04-10 Sadegh Dalvandi , Brijesh Dongol , Simon Doherty

Imagine living in a world composed solely of primitive shapes, could you still recognise familiar objects? Recent studies have shown that abstract images-constructed by primitive shapes-can indeed convey visual semantic information to deep…

Computer Vision and Pattern Recognition · Computer Science 2025-09-18 Haotian Li , Jianbo Jiao

We study the Nichols algebra of a semisimple Yetter-Drinfeld module and introduce new invariants such as real roots. The crucial ingredient is a `reflection' in the class of such Nichols algebras. We conclude the classifications of…

Quantum Algebra · Mathematics 2009-02-04 N. Andruskiewitsch , I. Heckenberger , H. -J. Schneider

We introduce an operational rewriting-based semantics for strictly positive nested higher-order (co)inductive types. The semantics takes into account the "limits" of infinite reduction sequences. This may be seen as a refinement and…

Logic in Computer Science · Computer Science 2023-06-22 Łukasz Czajka

We introduce an algebraic concept of the frame for abstract conditional independence (CI) models, together with basic operations with respect to which such a frame should be closed: copying and marginalization. Three standard examples of…

Combinatorics · Mathematics 2024-11-04 Tobias Boege , Janneke H. Bolt , Milan Studený

We give an introduction to the theory of weak Hopf algebras proposed recently as a coassociative alternative of weak quasi-Hopf algebras. We follow an axiomatic approach keeping as close as possible to the "classical" theory of Hopf…

Quantum Algebra · Mathematics 2007-05-23 G. Bohm , F. Nill , K. Szlachanyi

Approximate Bayesian Computation (ABC) is typically used when the likelihood is either unavailable or intractable but where data can be simulated under different parameter settings using a forward model. Despite the recent interest in ABC,…

Methodology · Statistics 2019-12-24 Rafael Izbicki , Ann B. Lee , Taylor Pospisil

Complex-valued sparse coding is a data representation which employs a dictionary of two-dimensional subspaces, while imposing a sparse, factorial prior on complex amplitudes. When trained on a dataset of natural image patches, it learns…

Machine Learning · Computer Science 2014-02-19 Wiktor Mlynarski

Recursively defined linked data structures embedded in a pointer-based heap and their properties are naturally expressed in pure first-order logic with least fixpoint definitions (FO+lfp) with background theories. Such logics, unlike pure…

Logic in Computer Science · Computer Science 2022-09-27 Adithya Murali , Lucas Peña , Eion Blanchard , Christof Löding , P. Madhusudan

Abstract machines for the strong evaluation of lambda-terms (that is, under abstractions) are a mostly neglected topic, despite their use in the implementation of proof assistants and higher-order logic programming languages. This paper…

Programming Languages · Computer Science 2016-03-18 Beniamino Accattoli , Pablo Barenbaum , Damiano Mazza

We introduce the framework FreeCHR which formalizes the embedding of Constraint Handling Rules (CHR) into a host language, using the concept of initial algebra semantics from category theory. We hereby establish a high-level implementation…

Programming Languages · Computer Science 2025-07-17 Sascha Rechenberger , Thom Frühwirth

Many example-guided program synthesis techniques use abstractions to prune the search space. While abstraction-based synthesis has proven to be very powerful, a domain expert needs to provide a suitable abstract domain, together with the…

Programming Languages · Computer Science 2018-04-13 Xinyu Wang , Greg Anderson , Isil Dillig , K. L. McMillan

Hand-crafting high quality prompts to optimize the performance of language models is a complicated and labor-intensive process. Furthermore, when migrating to newer, smaller, or weaker models (possibly due to latency or cost gains), prompts…

Humans are able to identify and categorize novel compositions of known concepts. The task in Compositional Zero-Shot learning (CZSL) is to learn composition of primitive concepts, i.e. objects and states, in such a way that even their novel…

Computer Vision and Pattern Recognition · Computer Science 2022-04-27 Muhammad Umer Anwaar , Zhihui Pan , Martin Kleinsteuber
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