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Walnut is a software that using automata can prove theorems in combinatorics on words about automatic sequences. We are able to apply this software to both prove new results as well as reprove some old results on avoiding squares and cubes…

Formal Languages and Automata Theory · Computer Science 2022-08-11 John Machacek

Certain famous combinatorial sequences, such as the Catalan numbers and the Motzkin numbers, when taken modulo a prime power, can be computed by finite automata. Many theorems about such sequences can therefore be proved using Walnut, which…

Combinatorics · Mathematics 2021-10-14 Narad Rampersad , Jeffrey Shallit

We consider the implementation of the transduction of automatic sequences, and their generalizations, in the Walnut software for solving decision problems in combinatorics on words. We provide a number of applications, including (a)…

Formal Languages and Automata Theory · Computer Science 2023-04-12 Jeffrey Shallit , Anatoly Zavyalov

Automated theorem proving, or more broadly automated reasoning, aims at using computer programs to automatically prove or disprove mathematical theorems and logical statements. It takes on an essential role across a vast array of…

Quantum Physics · Physics 2026-01-14 Zheng-Zhi Sun , Qi Ye , Dong-Ling Deng

We explore the Ziv-Lempel and Crochemore factorizations of some classical automatic sequences making an extensive use of the theorem prover Walnut.

Discrete Mathematics · Computer Science 2024-03-25 Marieh Jahannia , Manon Stipulanti

We describe a technique for mechanically proving certain kinds of theorems in combinatorics on words, using automata and a package for manipulating them. We illustrate our technique by solving, purely mechanically, an open problem of Currie…

Formal Languages and Automata Theory · Computer Science 2012-03-30 Dane Henshall , Jeffrey Shallit

We use the automatic theorem prover Walnut to resolve various open problems from the OEIS and beyond. Specifically, we clarify the structure of sequence A260311, which concerns runs of sums of upper Wythoff numbers. We extend a result of…

Number Theory · Mathematics 2025-03-07 Wieb Bosma , Rene Bruin , Robbert Fokkink , Jonathan Grube , Anniek Reuijl , Thian Tromp

We show how the software Walnut can be used to obtain concise proofs of results concerning variants of the famous Wythoff game, in which blocking maneuvers or terminal positions are added, as discussed respectively by Larsson (2011) and…

Discrete Mathematics · Computer Science 2025-12-15 Antoine Renard , Michel Rigo

We discuss the use of negative bases in automatic sequences. Recently the theorem-prover Walnut has been extended to allow the use of base (-k) to express variables, thus permitting quantification over Z instead of N. This enables us to…

Formal Languages and Automata Theory · Computer Science 2022-08-15 Jeffrey Shallit , Sonja Linghui Shan , Kai Hsiang Yang

LangPro is an automated theorem prover for natural language (https://github.com/kovvalsky/LangPro). Given a set of premises and a hypothesis, it is able to prove semantic relations between them. The prover is based on a version of analytic…

Computation and Language · Computer Science 2017-09-01 Lasha Abzianidze

A tree automatic structure is a structure whose domain can be encoded by a regular tree language such that each relation is recognisable by a finite automaton processing tuples of trees synchronously. Words can be regarded as specific…

Logic in Computer Science · Computer Science 2012-01-25 Martin Huschenbett

We discuss a technique, based on Angluin's algorithm, for automatically generating finite automata for various kinds of useful first-order logic formulas in B\"uchi arithmetic. Construction in this way can be faster and use much less space…

Formal Languages and Automata Theory · Computer Science 2025-07-29 Mazen Khodier , Luke Schaeffer , Jeffrey Shallit

In combinatorics on words, a classical topic of study is the number of specific patterns appearing in infinite sequences. For instance, many works have been dedicated to studying the so-called factor complexity of infinite sequences, which…

Combinatorics · Mathematics 2024-10-04 Pierre Popoli , Jeffrey Shallit , Manon Stipulanti

Pecan is an automated theorem prover for reasoning about properties of Sturmian words, an important object in the field of combinatorics on words. It is capable of efficiently proving non-trivial mathematical theorems about all Sturmian…

Logic in Computer Science · Computer Science 2021-02-04 Reed Oei , Dun Ma , Christian Schulz , Philipp Hieronymi

RA is a software package that couples machine learning with formal reasoning in an attempt to find the laws that generate the empirical data that it has been given access to. A brief outline of RA in its initial stage of development is…

Logic in Computer Science · Computer Science 2024-05-22 G. Pantelis

JaTeCS is an open source Java library that supports research on automatic text categorization and other related problems, such as ordinal regression and quantification, which are of special interest in opinion mining applications. It covers…

Computation and Language · Computer Science 2017-06-22 Andrea Esuli , Tiziano Fagni , Alejandro Moreo Fernandez

We present a~novel approach to the problem of automated theorem proving. Polynomial cost procedures that recognise sentences belonging to a theory are generated on a basis of a set of axioms of the so-called Truncated Predicate Calculus…

Logic in Computer Science · Computer Science 2019-07-31 Grzegorz Wiaderek , Iwona Skalna

OpenAutoNLU is an open-source automated machine learning library for natural language understanding (NLU) tasks, covering both text classification and named entity recognition (NER). Unlike existing solutions, we introduce data-aware…

Computation and Language · Computer Science 2026-03-03 Grigory Arshinov , Aleksandr Boriskin , Sergey Senichev , Ayaz Zaripov , Daria Galimzianova , Daniil Karpov , Leonid Sanochkin

Mathematical theorems are human knowledge able to be accumulated in the form of symbolic representation, and proving theorems has been considered intelligent behavior. Based on the BHK interpretation and the Curry-Howard isomorphism, proof…

Neural and Evolutionary Computing · Computer Science 2016-04-18 Li-An Yang , Jui-Pin Liu , Chao-Hong Chen , Ying-ping Chen

I propose a system for Automated Theorem Proving in higher order logic using deep learning and eschewing hand-constructed features. Holophrasm exploits the formalism of the Metamath language and explores partial proof trees using a…

Artificial Intelligence · Computer Science 2016-08-11 Daniel Whalen
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