Since in Heyting Arithmetic all atomic formulas are decidable, a Kripke model for HA may be regarded classically as a collection of classical structures for the language of arithmetic, partially ordered by the submodel relation. The obvious question is then: are these classical structures models of Peano Arithmetic ? And dually: if a collection of models of PA, partially ordered by the submodel relation, is regarded as a Kripke model, is it a model of HA? Some partial answers to these (...) questions were obtained in [6], [3], [1] and [2]. Here we present some results in the same direction, announced in [7]. In particular, it is proved that the classical structures at the nodes of a Kripke model of HA must be models of IΔ1 and that the relation between these classical structures must be that of a Δ1-elementary submodel. MSC: 03F30, 03F55. (shrink)

In the text the author considers politics of interpretation of South-Slavic peoples' recent past, which was demonstrated by the most prominent activists of Serbian non-governmental organizations. By summarizing the interpretation in a few points, the author attempts to identify its key features: arrogance and extremism as a style, counter factuality as a strategy and anti-Serbian nationalism and racism as an ideological strongpoint. In the final section of the text, what is pleaded is a precise legal regulation of that delicate area (...) of civil activism, which in the last decade has presented a malignant protuberance on destroyed social tissue of Serbia and serious threat to the rest of its considerably lost national interests. U tekstu se razmatra politika interpretiranja novije jugoslovenske proslosti, kakvu je u protekloj deceniji praktikovalo nekoliko najprominentnijih aktivista srbijanskih nevladinih organizacija, nominalno usmerenih zastiti i unapredjenju ljudskih prava, promociji vrednosti mira i nenasilja, multikulturalizma i tolerancije. Sazimajuci njihovu interpretaciju nedavne proslosti jugoslovenskih naroda u nekoliko tacaka, autorka identifikuje kljucne karakteristike jedne nove i vulgarne - interpretatorske politicnosti, kakvu su ove nevladine organizacije demonstrirale u proteklom desetlecu svoga delovanja na srbijanskoj javnoj sceni: arogantnost i ekstremizam kao stil, falsifikatorstvo i kontrafaktualnost kao strategiju i antisrpski nacionalizam i rasizam kao ideolosko uporiste. U zakljucnom delu teksta autorka pledira za precizno zakonsko regulisanje ove delikatne oblasti civilnog delovanja, koje bi jasno definisalo sve njegove vaznije aspekte. (shrink)

The paper offers a formalization of reasoning about distributed multi-agent systems. The presented propositional probabilistic temporal epistemic logic |$\textbf {PTEL}$| is developed in full detail: syntax, semantics, soundness and strong completeness theorems. As an example, we prove consistency of the blockchain protocol with respect to the given set of axioms expressed in the formal language of the logic. We explain how to extend |$\textbf {PTEL}$| to axiomatize the corresponding first-order logic.

The great variety of meditation techniques found in different contemplative traditions presents a challenge when attempting to create taxonomies based on the constructs of contemporary cognitive sciences. In the current issue of Consciousness and Cognition, Travis and Shear add ‘automatic self-transcending’ to the previously proposed categories of ‘focused attention’ and ‘open monitoring’, and suggest characteristic EEG bands as the defining criteria for each of the three categories. Accuracy of current taxonomies and potential limitations of EEG measurements as classifying criteria are (...) discussed. (shrink)

The article contains an explanation of the topic to be dealt with by the author in the next research cycle. In the first part of the article author try to identify the main obstacles facing Serbia in the imperative processes of its European integrations. According to the author, those obstacles are numerous and mostly unique, based on the fact that in the last decade Serbian people was a subject of complete state disintegration to which the most powerful external contribution was (...) given by the USA and Western Europe itself. In spite of those obstacles, Serbia faces inevitable duty to carry out a complete political, economic and cultural reconstitution of its destroyed society as a condition sine qua non its own survival and successful development. In the final section of the text, what is pleaded is realistic approach to the multitude of the problems facing Serbia on the threshold of the new millennium. (shrink)

Publication date: 2 May 2019 Source: Author: Zoran Mastilo Aim of this paper is to, by means of comparative analysis, demonstrate that contemporary pension systems are limitation factors of development of the Republic of Srpska, and that they should be reformed and improved. Ultimately, pension systems should be the basis for development of the Republic of Srpska. They should significantly improve strengthening of financial markets, enhancement of capital markets, higher growth rates of the Republic of Srpska, idecrease of unemployment. (...) Private pension funds are to change the habits and ideas of every future insurance holder, aiming to make the pension rights a matter of concern of every individual, instead being the obligation and ballast of the society. Today, stabile financing of pension systems and their funds is becoming increasingly questionable. A gap is emerging between the area of rights gained by law and financial possibilities for their implementation. Pay-as-you-go systems, i.e. systems of inter-generation solidarityare particularly endangered. Adequate systematization of gathered data, i.e. evidence, should provide conclusions that pension systems are a limitation todevelopment of national economy. This claim is present in underdeveloped and developing countries, with developed economies also facing grave problems. (shrink)

It is proved that MacLane's coherence results for monoidal and symmetric monoidal categories can be extended to some other categories with multiplication; namely, to relevant, affine and cartesian categories. All results are formulated in terms of natural transformations equipped with “graphs” (g-natural transformations) and corresponding morphism theorems are given as consequences. Using these results, some basic relations between the free categories of these classes are obtained.

Članak tematizira ulogu kompleksnog mišljenja u razvoju znanstvene spoznaje i mišljenja općenito. Po Vigotskom, kompleksno mišljenje je početna faza u ontogenezi, pa i filogenezi, ljudskog mišljenja i ono je u tom slijedu predpojmovno. Prema istom autoru, ono ima svoju unutarnju genezu koja započinje asocijativnim kompleksima, a završava pseudopojmovima. Kompleksno mišljenje je po svojoj bitifluidno, neograničeno i omogućuje prenošenje značenja. Smatramo da kompleksno mišljenje dolazi do izraza prije svega u uporabi metafora i analogija. Metafore i analogije imaju važnu eksplanatornu i ponekad (...) čak heurističku ulogu u znanstvenom mišljenju. Kompleksno mišljenje dolazi do izražaja na svim razinama i etapama razvoja znanstvenog mišljenja. Metafore mogu biti dijelom kompleksnog mišljenja kao dominantnog načina mišljenja ili u pojmovnoj strukturi kao pomoćni elementi objašnjenja. Analogije predstavljaju izvjesno strukturiranje kompleksnog i pojmovnogmišljenja.Članak tematizira ulogu kompleksnog mišljenja u razvoju znanstvene spoznaje i mišljenja općenito. Po Vigotskom, kompleksno mišljenje je početna faza u ontogenezi, pa i filogenezi, ljudskog mišljenja i ono je u tom slijedu predpojmovno. Prema istom autoru, ono ima svoju unutarnju genezu koja započinje asocijativnim kompleksima, a završava pseudopojmovima. Kompleksno mišljenje je po svojoj bitifluidno, neograničeno i omogućuje prenošenje značenja. Smatramo da kompleksno mišljenje dolazi do izraza prije svega u uporabi metafora i analogija. Metafore i analogije imaju važnu eksplanatornu i ponekad čak heurističku ulogu u znanstvenom mišljenju. Kompleksno mišljenje dolazi do izražaja na svim razinama i etapama razvoja znanstvenog mišljenja. Metafore mogu biti dijelom kompleksnog mišljenja kao dominantnog načina mišljenja ili u pojmovnoj strukturi kao pomoćni elementi objašnjenja. Analogije predstavljaju izvjesno strukturiranje kompleksnog i pojmovnogmišljenja. (shrink)

The author starts from the hypothesis that it is essential for the countries of the region to critically assess the synergy established between systemic, political corruption and a selectively weak,?devious? nature of the state. Moreover, the key dilemma is whether the expanded practice of political rent seeking supports the conclusion that the root of all corruption is in the very existence of the state - particularly in excessive, selective and deforming state interventions and benefits that create a fertile ground for (...) corruption? The author argues that the destructive combination of weak government and rampant political corruption is based on scattered state intervention, while also rule the parties cartel in the executive branch subordinate to parliament, the judiciary and the police. Corrupt exchange takes place with the absence of strong institutional framework and the precise rules of the political and electoral games, control of public finances and effective political and anti-monopoly legislation and practice included. Exit from the current situation can be seen in the realization of effective anti?corruption strategy that integrates preventive and repressive measures and activities and lead to the establishment of principles of good governance. (shrink)

We study a propositional probabilistic temporal epistemic logic |$\textbf {PTEL}$| with both future and past temporal operators, with non-rigid set of agents and the operators for agents’ knowledge and for common knowledge and with probabilities defined on the sets of runs and on the sets of possible worlds. A semantics is given by a class |${\scriptsize{\rm Mod}}$| of Kripke-like models with possible worlds. We prove decidability of |$\textbf {PTEL}$| by showing that checking satisfiability of a formula in |${\scriptsize{\rm Mod}}$| is (...) equivalent to checking its satisfiability in a finite set of finitely representable structures. The same procedure can be applied to the class of all synchronous |${\scriptsize{\rm Mod}}$|-models. We give an upper complexity bound for the satisfiability problem for |${\scriptsize{\rm Mod}}$|⁠. (shrink)

Publication date: 28 April 2021 Source: International Letters of Social and Humanistic Sciences Vol. 90 Author: Zoran Mastilo, Nenad Božović, Dejan Mastilo The paper addresses and evaluates the currency board policy and assesses whether the currency board, as a form of monetary policy, is in the function of development of Bosnia and Herzegovina's national economy. In this context, a hypothesis that the currency board provides the foundation for growth and development of a transition economy is being put to the (...) test. To test the hypothesis, the paper compares the movement of economic growth indicators among the countries of South Eastern Europe with the primary focus on Bosnia and Herzegovina. By comparing the obtained results, as well as by applying the correlation and regression analysis, by means of simple linear regression, it is proven that the currency board does not represent an obstacle to economic growth, but is the basis for establishing the stability of the economy and the basis for sustainable growth and development able to adequately respond to shocks. (shrink)

It is proved that MacLane''s coherence results for monoidal and symmetric monoidal categories can be extended to some other categories with multiplication; namely, to relevant, affine and cartesian categories. All results are formulated in terms of natural transformations equipped with graphs (g-natural transformations) and corresponding morphism theorems are given as consequences. Using these results, some basic relations between the free categories of these classes are obtained.

Rafael Malach is currently a professor in the department of Neurobiology at the Weizmann Institute in Israel. His current research is aimed at understanding how the neuronal circuitry in the human brain translates a stream of sensory stimuli into meaningful perception. Rafael Malach received his PhD in physiological optics from UC Berkeley and did his post-doctorate research at MIT. Originally doing research on the organization of neuronal connections in the primate brain, his focus has recently shifted to the study of (...) the human cerebral cortex using fMRI. Professor Malach has begun this research at Massachusetts General Hospital, exploring a new object-related region called the lateral occipital complex. Since then he expanded this research, studying the human visual cortex using a variety of methods, including adaptation paradigms, backward masking, and more recently naturalistic stimuli--all aimed at deciphering the intriguing link between perceptual experience and brain activity. (shrink)

An extension of the notion of dinatural transformation is introduced in order to give a criterion for preservation of dinaturality under composition. An example of an application is given by proving that all bicartesian closed canonical transformations are dinatural. An alternative sequent system for intuitionistic propositional logic is introduced as a device, and a cut-elimination procedure is established for this system.

In this paper we propose substructural propositional logic obtained by da Costa weakening of the intuitionistic negation. We show that the positive fragment of the da Costa system is distributive lattice logic, and we apply a kind of da Costa weakening of negation, by preserving, differently from da Costa, its fundamental properties: antitonicity, inversion, and additivity for distributive lattices. The other stronger paraconsistent logic with constructive negation is obtained by adding an axiom for multiplicative property of weak negation. After that, (...) we define Kripke-style semantics based on possible worlds and derive from it many-valued semantics based on truth-functional valuations for these two paraconsistent logics. Finally, we demonstrate that this model-theoretic inference system is adequate—sound and complete with respect to the axiomatic da Costa-like systems for these two logics. (shrink)

U tekstu se razmatra priroda medjunarodnih odnosa i medjunarodne politike kakva se uoblicava nakon kraja Hladnog rata, politike ciji pravac u preteznoj meri odredjuju SAD kao jedina preostala super-sila. Namera autora je da ukaze na kljucne tacke divergencije moralno-vrednosne retorike i spoljno-politicke pragmatike ove mega-drzave. U tom smislu, razmatraju se slucajevi americkog stava, odnosno aktivnog tretmana dva dogadjaja koji su u politicko-bezbednosnom pogledu obelezili proteklu deceniju u svetsko-istorijskim razmerama - raspad/razbijanje Jugoslavije i kriza u Persijskom zalivu. Zakljucak autorke je da (...) spoljna politika aktualne super-sile jos uvek usmeravana real-politickim, odnosno interesnim, pre nego moralno-vrednosnim motivima. U zavrsnom delu rada razmatraju se antropoloski argumenti za vaspostavljanje narusenog "balansa moci" na globalnom nivou kao jedinog garanta mira i stabilnosti u svetu.. (shrink)

Raspravljamo o ulozi predpojmovnog kompleksnog mišljenja u znanstvenoj spoznaji i razvoju znanosti. Kompleksno mišljenje sa svom heterogenošću i imaginacijom omogućuje održavanje pojmovne strukture i reorganizaciju cjelokupnih teorijskih mreža, ali to “naplaćuje” latentnim prisustvom protuslovlja i nekonzistentnosti.Članak se nastavlja na našu analizu odnosa između kompleksnog i pojmovnog mišljenja u Aristotelovoj Fizici. Ako je kod Aristotela središnji kompleks pojam “mjesta”, kod Galileija je osnovni kompleks zbirka gibanja-stanja. Galilei još nema izrađenu potpunu pojmovnu strukturu mehanike pa možemo reći da je njegova teorijska osnova (...) uronjena u kompleksnu razinu, ali se oslanja na matematičku strukturu i eksperiment i time uspijeva formirati jednu stabilnu teorijsku organizaciju. Time dobiva osnovu za novu teorijsku sistematizaciju i za formiranje pojmovne strukture kakva je Newtonova. Možemo u izvjesnom smislu reći da je time kompleksno mišljenje u znanosti bilo podignuto na višu razinu i dovedeno u pred-paradigmično razdoblje.We discuss the role of the pre-conceptual complex thought in scientificknowledge and in the development of science. The heterogeneity and imagination of complex thought enables the preservation of the conceptual structure and helps reshape entire theoretical nets, however, its downside is reflected in its latent contradiction and inconsistency. This paper is a continuation of our analysis of the relationship between complex and conceptual thought in Aristotle’s Physics. If Aristotle’s central complex is the notion of “place”, then Galileo’s basic complex is the notion of “ movement”. Since Galileo didn’t have an elaborated conceptual structure of mechanics, we can say that his theoretical basis is “steeped” in the level of complex thought, yet it relies on the mathematical structure and experiment, thereby creating a stable theoretical organization which serves as a basis for the new theoretical systematization and for the shaping of a conceptual structure as Newton’s. Thus, we may claim that, in a certain way, this change raised complex thought in science to a higher level, and brought it to a pre-paradigmatic period. (shrink)

Raspravljamo o ulozi predpojmovnog kompleksnog mišljenja u znanstvenoj spoznaji i razvoju znanosti. Kompleksno mišljenje sa svom heterogenošću i imaginacijom omogućuje pojmovne strukture i reorganizaciju cjelokupnih teorijskih mreža, ali to 'naplaćuje' latentnim prisustvom protislovja i nekonzistentnosti. Galilei još nema izrađenu potpunu pojmovnu shemu mehanike, pa možemo reći da je njegove teorijska osnova uronjena u kompleksnu razinu, ali se oslanja na matematičku strukturu i eksperiment i time uspjeva formirati jednu stabilnu teorijsku organizaciju. Možemo u izvesnom smislu reći da je time kompleksno mišljenje (...) u znanosti bilo podignuto na višu razinu i dovedeno u pred-paradigmatično razdoblje. (shrink)

Predmet ovog rada su eticki aspekti agresije NATO na SRJ, odnosno Srbiju, sprovodjene od marta do juna 1999. godine. Rad je koncipiran kao svojevrstan kriticki dijalog sa J. Habermasom, odnosno njegovim stavovima iznesenim u tekstu?Bestijalnost i humanost - rat na granici prava i morala?. Nakon kraceg prikaza Habermasovog stanovista, u uvodnom delu rada autorka razmatra moralne implikacije njegovog stava o hirurskoj preciznosti bombardovanja i principu postede civilnog stanovnistva kao karakteristikama ove agresije od, kako tvrdi ovaj autor, visokog legitimirajuceg znacaja. Potom (...) se usredsredjuje na kljucni, deklarativno moralni argument kojim se agresija opravdavala - zastita ugrozenih ljudskih prava kosmetskih Albanaca i sprecavanje humanitarne katastrofe kojoj su, kako se tvrdilo, bili izlozeni. Temeljnom analizom ovog argumenta, koju autorka sprovodi u nekoliko koraka, ona zakljucuje da agresija nije bila, kako je Habermas tvrdio, rat na granici prava i morala, vec s onu stranu i prava i morala, situirana duboko u domen interesno motivisanih oruzanih akata americke spoljne politike. PR Projekat Ministarstva nauke Republike Srbije, br. 43007. (shrink)