REPOSITORY
THE NICOLAUS COPERNICUS UNIVERSITY
IN TORUŃ
is an institutional repository of Nicolaus Copernicus University in Toruń. The task of the Repository is to promote scientific achievements and research conducted at NCU and to support teaching.
Recent Submissions
On Nondefinability of Interior-Connectedness via the Contact Relation
(Duke University Press, University of Notre Dame, 2026) Gruszczyński, Rafał; Menchón, Paula
This short paper is a small contribution to the field of Boolean contact algebras. We analyze the nondefinability of the property of interior-connectedness, and we prove certain minimality conditions for algebras and spaces that can be used in demonstrating that the aforementioned property cannot be expressed by means of contact within regular closed algebras.
Technological diversification in China: the role of intra- and extra-regional collaboration
(Taylor & Francis, 2026) Lu, Jiayi; Cao, Zhan; Derudder, Ben
This study investigates how intra- and extra-regional collaborations affect regional technological diversification in Chinese urban regions (URs), using a continuous indicator that places diversification along a spectrum from related to unrelated. Based on patent co-application data from 2001 to 2020, we analyse the intensity, technological diversity and the correlation of intra- and extra-regional collaborations. Our results show that the effects of (1) intra-regional collaboration intensity on related diversification and (2) extra-regional collaboration diversity on unrelated
diversification are both curvilinear. In addition, extra-regional intensity and the correlation between intra- and extra-regional collaborations foster related diversification. Moreover, economic disparities within URs reinforce, rather than weaken, the positive influence of intra-regional intensity and intra–extra technological correlation on related diversification. These results challenge conventional assumptions and highlight the importance of coordinated collaboration structures in promoting regional diversification, especially under uneven regional development conditions.
Absurd sentences and normal deductions: A case of the logic of demodalised analytic implication with falsum
(2026) Klonowski, Mateusz
The logic of demodalised Parry analytic implication DAI was introduced by J. M. Dunn. In its original formulation, the language of DAI consisted of classical negation, classical conjunction, and demodalised analytic implication. Later, R. L. Epstein rediscovered DAI as a content-inclusion logic, by providing semantics in terms of set-assignment models. Epstein called it the dependence logic D. He also studied DAI expanded with the constants falsum and verum in the context of algebraic analysis. More recently, A. Ledda, F. Paoli, and M. Pra Baldi investigated DAI with constants and provided an algebraic semantics in terms of implicative involutive bisemilattices. In this paper, we study DAI expressed in a language without nega-
tion but with the constant falsum. First, we examine several semantic treatments of falsum, each of which gives rise to different definable
negations and, consequently, to distinct logics. But we focus only on one logic, namely DAI without negation but with falsum. Second, we introduce two labelled deductive systems for the resulting logic. We prove for each deductive system the soundness and completeness theorems and establish a Prawitz-style normalisation theorem.
Cmentarzysko i obozowiska kultury pucharów lejkowatych w Markowicach na Kujawach
(Wydawnictwo Naukowe Uniwersytetu Mikołaja Kopernika, 2025) Adamczak, Kamil
Teaching Archival Science in Poland: Historical and Contemporary Contexts and Current Challenges
(Litwin Books, 2026-04) Wiśniewska-Drewniak, Magdalena; Rosa, Agnieszka; Jabłońska, Marlena
This chapter examines the historical development and contemporary challenges of teaching archival science in Poland, with a primary focus on Nicolaus Copernicus University (NCU) in Toruń as the leading center. Archival education traces its roots to the interwar period and post-World War II university programs integrated with history studies, evolving into independent bachelor's and master's degrees in "Archival Science and Records Management" launched at NCU in 2006-2007, following the Bologna Process and a national model of professional competencies developed in 2009. Today, NCU offers the standalone archival program emphasizing modules in archives, records management, history, law, digital systems, and practical training - including mandatory internships, archival tours, and emerging micro-credentials. Despite free public higher education and growing interdisciplinarity, key challenges persist: recruitment hurdles with "ghost students" and high dropout rates, the COVID-19 shift to hybrid teaching, and the lack of formal recognition for archival science as an autonomous discipline, forcing scholars into history frameworks that constrain research on contemporary issues. Drawing on the authors' direct involvement in curriculum design and NCU's programs, the analysis highlights student demands for more practical skills and "future competencies" (e.g., ICT, critical thinking), as revealed in graduate surveys. It advocates modernizing curricula through practitioner involvement, program flexibility, and promotion of archival careers amid labor market shifts, while preserving NCU's long tradition of excellence to ensure relevance in a digital, multifaceted archival landscape.