Results for 'Antonio Di Nola'

991 found
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  1.  24
    Perfect MV-Algebras Are Categorically Equivalent to Abelian l-Groups.Antonio Di Nola & Ada Lettieri - 1994 - Studia Logica 53 (3):417-432.
    In this paper we prove that the category of abelian l-groups is equivalent to the category of perfect MV-algebras. Furthermore, we give a finite equational axiomatization of the variety generated by perfect MV-algebras.
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  2.  18
    Erratum to “State-morphism MV-algebras” [Ann. Pure Appl. Logic 161 (2009) 161–173].Antonio Di Nola, A. Dvurečenskij & Ada Lettieri - 2010 - Annals of Pure and Applied Logic 161 (12):1605-1607.
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  3.  32
    On monadic MV-algebras.Antonio Di Nola & Revaz Grigolia - 2004 - Annals of Pure and Applied Logic 128 (1-3):125-139.
    We define and study monadic MV-algebras as pairs of MV-algebras one of which is a special case of relatively complete subalgebra named m-relatively complete. An m-relatively complete subalgebra determines a unique monadic operator. A necessary and sufficient condition is given for a subalgebra to be m-relatively complete. A description of the free cyclic monadic MV-algebra is also given.
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  4.  33
    Perfect MV-algebras are categorically equivalent to abelianl-groups.Antonio Di Nola & Ada Lettieri - 1994 - Studia Logica 53 (3):417-432.
    In this paper we prove that the category of abelianl-groups is equivalent to the category of perfect MV-algebras. Furthermore, we give a finite equational axiomatization of the variety generated by perfect MV-algebras.
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  5.  37
    State-morphism MV-algebras.Antonio Di Nola & Anatolij Dvurečenskij - 2010 - Annals of Pure and Applied Logic 161 (2):161-173.
    We present a stronger variation of state MV-algebras, recently presented by T. Flaminio and F. Montagna, which we call state-morphism MV-algebras. Such structures are MV-algebras with an internal notion, a state-morphism operator. We describe the categorical equivalences of such state MV-algebras with the category of unital Abelian ℓ-groups with a fixed state operator and present their basic properties. In addition, in contrast to state MV-algebras, we are able to describe all subdirectly irreducible state-morphism MV-algebras.
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  6.  47
    Finitely generated free MV-algebras and their automorphism groups.Antonio Di Nola, Revaz Grigolia & Giovanni Panti - 1998 - Studia Logica 61 (1):65-78.
    The MV-algebra S m w is obtained from the (m+1)-valued ukasiewicz chain by adding infinitesimals, in the same way as Chang's algebra is obtained from the two-valued chain. These algebras were introduced by Komori in his study of varieties of MV-algebras. In this paper we describe the finitely generated totally ordered algebras in the variety MV m w generated by S m w . This yields an easy description of the free MV m w -algebras over one generator. We characterize (...)
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  7.  26
    An analysis of the logic of Riesz spaces with strong unit.Antonio Di Nola, Serafina Lapenta & Ioana Leuştean - 2018 - Annals of Pure and Applied Logic 169 (3):216-234.
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  8.  29
    Compact representations of BL-algebras.Antonio Di Nola & Laurentiu Leustean - 2003 - Archive for Mathematical Logic 42 (8):737-761.
    In this paper we define sheaf spaces of BL-algebras (or BL-sheaf spaces), we study completely regular and compact BL-sheaf spaces and compact representations of BL-algebras and, finally, we prove that the category of non-trivial BL-algebras is equivalent with the category of compact local BL-sheaf spaces.
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  9.  14
    Gödel spaces and perfect MV-algebras.Antonio Di Nola & Revaz Grigolia - 2015 - Journal of Applied Logic 13 (3):270-284.
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  10.  22
    Natural dualities for varieties of BL-algebras.Antonio Di Nola & Philippe Niederkorn - 2005 - Archive for Mathematical Logic 44 (8):995-1007.
    BL-algebras are the Lindenbaum algebras for Hájek's Basic Logic, just as Boolean algebras correspond to the classical propositional calculus. The finite totally ordered BL-algebras are ordinal sums of MV-chains. We develop a natural duality, in the sense of Davey and Werner, for each subvariety generated by a finite BL-chain, and we use it to describe the injective and the weak injective members of these classes.
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  11.  25
    Subvarieties of BL-algebras generated by single-component chains.Antonio Di Nola, Francesc Esteva, Pere Garcia, Lluís Godo & Salvatore Sessa - 2002 - Archive for Mathematical Logic 41 (7):673-685.
    In this paper we study and equationally characterize the subvarieties of BL, the variety of BL-algebras, which are generated by families of single-component BL-chains, i.e. MV-chains, Product-chain or Gödel-chains. Moreover, it is proved that they form a segment of the lattice of subvarieties of BL which is bounded by the Boolean variety and the variety generated by all single-component chains, called ŁΠG.
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  12.  9
    Forcing in Łukasiewicz Predicate Logic.Antonio Di Nola, George Georgescu & Luca Spada - 2008 - Studia Logica 89 (1):111-145.
    In this paper we study the notion of forcing for Łukasiewicz predicate logic (Ł∀, for short), along the lines of Robinson’s forcing in classical model theory. We deal with both finite and infinite forcing. As regard to the former we prove a Generic Model Theorem for Ł∀, while for the latter, we study the generic and existentially complete standard models of Ł∀.
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  13.  18
    On Vaught’s Conjecture and finitely valued MV algebras.Antonio Di Nola & Giacomo Lenzi - 2012 - Mathematical Logic Quarterly 58 (3):139-152.
    We show that the complete first order theory of an MV algebra has equation image countable models unless the MV algebra is finitely valued. So, Vaught's Conjecture holds for all MV algebras except, possibly, for finitely valued ones. Additionally, we show that the complete theories of finitely valued MV algebras are equation image and that all ω-categorical complete theories of MV algebras are finitely axiomatizable and decidable. As a final result we prove that the free algebra on countably many generators (...)
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  14.  39
    Representation of MV-algebras by regular ultrapowers of [0, 1].Antonio Di Nola, Giacomo Lenzi & Luca Spada - 2010 - Archive for Mathematical Logic 49 (4):491-500.
    We present a uniform version of Di Nola Theorem, this enables to embed all MV-algebras of a bounded cardinality in an algebra of functions with values in a single non-standard ultrapower of the real interval [0,1]. This result also implies the existence, for any cardinal α, of a single MV-algebra in which all infinite MV-algebras of cardinality at most α embed. Recasting the above construction with iterated ultrapowers, we show how to construct such an algebra of values in a (...)
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  15.  38
    Algebraically closed MV-algebras and their sheaf representation.Antonio Di Nola, Anna R. Ferraioli & Giacomo Lenzi - 2013 - Annals of Pure and Applied Logic 164 (3):349-355.
    In this paper we first provide a new axiomatization of algebraically closed MV-algebras based on McNaughtonʼs Theorem. Then we turn to sheaves, and we represent algebraically closed MV-algebras as algebras of global sections of sheaves, where the stalks are divisible MV-chains and the base space is Stonean.
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  16.  21
    An approach to stochastic processes via non-classical logic.Antonio Di Nola, Anatolij Dvurečenskij & Serafina Lapenta - 2021 - Annals of Pure and Applied Logic 172 (9):103012.
  17.  24
    A discrete free MV-algebra over one generator.Antonio Di Nola & Brunella Gerla - 2001 - Journal of Applied Non-Classical Logics 11 (3-4):331-339.
    In this paper we give a representation of the free MV-algebra over one generator as a structure of functions having finite domain.
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  18.  47
    A discrete representation of free MV-algebras.Antonio Di Nola, Revaz Grigolia & Luca Spada - 2010 - Mathematical Logic Quarterly 56 (3):279-288.
    We prove that the m -generated free MV-algebra is isomorphic to a quotient of the disjoint union of all the m -generated free MV-algebras. Such a quotient can be seen as the direct limit of a system consisting of all free MV-algebras and special maps between them as morphisms.
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  19.  5
    Duality Theory and Skeleta for Semisimple MV-Algebras.Antonio Di Nola & Giacomo Lenzi - 2018 - Studia Logica 106 (6):1239-1260.
    We start from Marra–Spada duality between semisimple MV-algebras and Tychonoff spaces, and we consider the particular cases when the \-skeleta of the MV-algebras are restricted in some way. In particular we consider antiskeletal MV-algebras, that is, the ones whose \-skeleton is trivial.
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  20.  49
    Forcing in łukasiewicz predicate logic.Antonio Di Nola, George Georgescu & Luca Spada - 2008 - Studia Logica 89 (1):111-145.
    In this paper we study the notion of forcing for Łukasiewicz predicate logic (Ł∀, for short), along the lines of Robinson’s forcing in classical model theory. We deal with both finite and infinite forcing. As regard to the former we prove a Generic Model Theorem for Ł∀, while for the latter, we study the generic and existentially complete standard models of Ł∀.
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  21.  18
    Commutative rings whose ideals form an MV‐algebra.Lawrence P. Belluce & Antonio Di Nola - 2009 - Mathematical Logic Quarterly 55 (5):468-486.
    In this work we introduce a class of commutative rings whose defining condition is that its lattice of ideals, augmented with the ideal product, the semi-ring of ideals, is isomorphic to an MV-algebra. This class of rings coincides with the class of commutative rings which are direct sums of local Artinian chain rings with unit.
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  22.  16
    Yosida Type Representation for Perfect MV‐Algebras.Lawrence P. Belluce & Antonio Di Nola - 1996 - Mathematical Logic Quarterly 42 (1):551-563.
    In [9] Mundici introduced a categorical equivalence Γ between the category of MV-algebras and the category of abelian [MATHEMATICAL SCRIPT SMALL L]-groups with strong unit. Using Mundici's functor Γ, in [8] the authors established an equivalence between the category of perfect MV-algebras and the category of abelian [MATHEMATICAL SCRIPT SMALL L]-groups. Aim of the present paper is to use the above functors to provide Yosida like representations of a large class of MV-algebras.
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  23.  31
    The Prime Spectrum of an MV‐Algebra.L. P. Belluce, Antonio Di Nola & Salvatore Sessa - 1994 - Mathematical Logic Quarterly 40 (3):331-346.
    In this paper we show that the prime ideal space of an MV-algebra is the disjoint union of prime ideal spaces of suitable local MV-algebras. Some special classes of algebras are defined and their spaces are investigated. The space of minimal prime ideals is studied as well.
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  24.  35
    Algebraic geometry for mv-algebras.Lawrence P. Belluce, Antonio di Nola & Giacomo Lenzi - 2014 - Journal of Symbolic Logic 79 (4):1061-1091.
  25.  21
    Perfect MV-Algebras and l-Rings.Lawrence P. Belluce, Antonio Di Nola & George Georgescu - 1999 - Journal of Applied Non-Classical Logics 9 (1):159-172.
    ABSTRACT In this paper we shall prove that l-rings are categorally equivalent to the MV*-algebras, a subcategory of perfect MV-algebras. We shall use this equivalence in order to characterize l-rings as quotients of certain semirings of matrices over MV*-algebras. We shall establish a relation between l-ideals in l-rings and some ideals in MV*-algebras. This edlows us to study the MV* f-algebras, a subclass of the MV*-algebras corresponding to the f-rings.
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  26. Fuzziness in Italy – Traces of a scattered history.Gianpiero Cattaneo, Giulianella Coletti, Antonio Di Nola, Mario Fedrizzi, Giangiacomo Gerla, Gabriella Pasi, Marco Elio Tabacchi, Settimo Termini & Aldo Ventre - 2017 - Archives for the Philosophy and History of Soft Computing 2017 (1).
    The history of Fuzziness in Italy is varied and scattered among a num- ber of research groups. As a matter of fact, “fuzziness” spread in Italy through a sort of spontaneous diffusion, and, also subsequently, no one felt the need to cre- ate some “national” common structure like an Association or similar things. Since a cohesive retelling would be next to impossible, a few members of the Italian fuzzy community have been asked to recount their experience and express their hopes (...)
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  27.  12
    Fuzzy Models of First Order Languages.A. di Nola & G. Gerla - 1986 - Mathematical Logic Quarterly 32 (19‐24):331-340.
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  28.  23
    Fuzzy Models of First Order Languages.A. di Nola & G. Gerla - 1986 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 32 (19-24):331-340.
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  29.  14
    Simplicial structures in MV-algebras and logic.L. P. Belluce & A. di Nola - 2007 - Journal of Symbolic Logic 72 (2):584-600.
  30.  6
    Involutive symmetric Gödel spaces, their algebraic duals and logic.A. Di Nola, R. Grigolia & G. Vitale - 2023 - Archive for Mathematical Logic 62 (5):789-809.
    It is introduced a new algebra$$(A, \otimes, \oplus, *, \rightharpoonup, 0, 1)$$(A,⊗,⊕,∗,⇀,0,1)called$$L_PG$$LPG-algebra if$$(A, \otimes, \oplus, *, 0, 1)$$(A,⊗,⊕,∗,0,1)is$$L_P$$LP-algebra (i.e. an algebra from the variety generated by perfectMV-algebras) and$$(A,\rightharpoonup, 0, 1)$$(A,⇀,0,1)is a Gödel algebra (i.e. Heyting algebra satisfying the identity$$(x \rightharpoonup y ) \vee (y \rightharpoonup x ) =1)$$(x⇀y)∨(y⇀x)=1). The lattice of congruences of an$$L_PG$$LPG-algebra$$(A, \otimes, \oplus, *, \rightharpoonup, 0, 1)$$(A,⊗,⊕,∗,⇀,0,1)is isomorphic to the lattice of Skolem filters (i.e. special type ofMV-filters) of theMV-algebra$$(A, \otimes, \oplus, *, 0, 1)$$(A,⊗,⊕,∗,0,1). The variety$$\mathbf {L_PG}$$LPGof$$L_PG$$LPG-algebras (...)
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  31.  22
    On normal forms in Łukasiewicz logic.A. Di Nola & A. Lettieri - 2004 - Archive for Mathematical Logic 43 (6):795-823.
    Formulas of n variables of Łukasiewicz sentential calculus can be represented, via McNaughton’s theorem, by piecewise linear functions, with integer coefficients, from hypercube [0,1] n to [0,1], called McNaughton functions. As a consequence of the McNaughton representation of a formula it is obtained a canonical form of a formula. Indeed, up to logical equivalence, any formula can be written as an infimum of finite suprema of formulas associated to McNaughton functions which are truncated functions to $[0,1]$ of the restriction to (...)
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  32. Atto e funzione: sistema di deontica: materiale a priori.Antonio Incampo & Universitáa di Bari - 1997 - Bari: Adriatica.
     
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  33. Studi in onore di Antonio Corsano.Antonio Corsano & Università di Bari (eds.) - 1970 - [Manduria]: Lacaita.
     
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  34. (A. TZOUVARAS What is so special with the powerset operation? 723). BAGARIA• R. BOSCH Proper forcing extensions and Solovay models 739. [REVIEW]M. Hamano, A. di Nola & A. LETT1ERI - 2004 - Archive for Mathematical Logic 43:822.
     
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  35. Giovanni Antonio Colozza: pedagogista e maestro: (con brani estratti dalle opere).Antonio Di Tullio - 1973 - [Campobasso]: Cassa di risparmio molisana.
     
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  36.  4
    La terra e lo spirito: questioni e personalità della filosofia in Molise tra Ottocento e Novecento.Antonio Di Chiro - 2016 - Lanciano: Carabba.
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  37.  20
    Umanità di un diritto: riconoscimento e promozione dell'aver-cura nei giorni della tecnica.Antonio Di Somma - 2019 - Rivista Italiana di Cure Palliative 21 (2):118-122.
    Il processo di riconoscimento delle cure palliative quale diritto umano individuale di base ha recentemente riscontrato una proficua quanto attesa accelerazione. Parimenti allo sviluppo tecnico dei nostri giorni non si esauriscono infatti le forme dell’umano sentire e sperare, l’esigenza e l’impeto dell’aver-cura autentico dell’altro, la risposta multidisciplinare, comunitaria e sociale che ne consegue doverosa. È quanto attesta e promuove la recente Dichiarazione di Astana sull’assistenza sanitaria primaria, nel riconoscere le cure palliative tra le forme di cura primarie oggi possibili e (...)
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  38.  7
    Logica, politica, economia nel pensiero di Pantaleo Carabellese.Antonio Di Loreto - 1971 - L'Aquila,: L. U. Japadre.
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  39.  32
    La cura oltre le barriere. Osservazioni a margine di alcuni recenti lavori internazionali.Antonio Di Somma - 2021 - Rivista Italiana di Cure Palliative 23 (4):256-260.
    La cura della salute è un fenomeno originario e insieme una necessità fondamentale, dinamica e non trascurabile della vita, dell’esistenza e dell’esperienza personale e comunitaria di ogni essere umano. La primarietà ontologica della cura, evidenziata anche negli studi filosofici più recenti dedicati alle pratiche dell’aver cura, richiama infatti, attraverso la dimensione co-esistentiva dell’essere insieme nel mondo l’uno con l’altro e l’uno per l’altro, alla stessa primarietà etica e al contempo politica della cura nel naturale e positivo sviluppo della struttura relazionale (...)
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  40.  12
    Con-essere e responsabilità. Alle radici della questione sociale della cura.Antonio Di Somma - 2024 - Rivista Italiana di Cure Palliative 26 (1):43-45.
    Con-essere, questa forma verbale infinita dalla profonda risonanza filosofica apre ancora oggi la ricerca al cuore e all’agire relazionale dell’essere umano curante. Non solo, essa richiama la riflessione alle stesse radici della questione sociale della cura. La cura è infatti, nella sua radicalità ontologica ed esistenziale, essenzialmente sociale, cioè manifestazione storico-temporale strutturata del con-essere insieme con gli altri e per gli altri proprio dell’esserci. Sociale è la cura nella sua struttura, aperta come è costantemente alla relazione con l’altro esserci, e (...)
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  41.  17
    L'orizzonte personale della scelta. Tra comunicazione della speranza e naturale desiderio di compimento.Antonio Di Somma - 2018 - Rivista Italiana di Cure Palliative 20 (2):95-99.
    Si tratta di una possibilità, di una disponibilità del pensiero. Dell’orizzonte di comprensione in cui tutti noi ci muoviamo incessantemente, qualunque cosa accada. Di uno spazio interiore ininterrottamente aperto al dialogo con sé stessi, con il mondo, l’esistenza, la vita, con quanto ci accade di positivo o negativo. Il vissuto che si dischiude alla mente, spesso a lungo un cammino nel vuoto e nell’assenza di ogni intuizione, un orizzonte di libertà. Un sistema di scelte e di valori incentrato sui compiti (...)
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  42.  19
    Essere speranza nel tempo della tecnica. Prospettive teorico-pratiche di orientamento.Antonio Di Somma - 2021 - Rivista Italiana di Cure Palliative 23 (2):127-132.
    Come si può essere speranza nel tempo della tecnica? Forse può essere utile interrogare brevemente a tale proposito il pensiero, o meglio approfondire alcune riflessioni presenti nell’elaborazione filosofica di importanti pensatori del Novecento. Attraverso tale procedimento si aprirà forse una prospettiva, un piccolo spiraglio, una via d’uscita tanto per il pensiero, quanto per la comprensione contemporanea della pratica quotidiana dell’aver-cura. Non deve stupire se si rimanda a classici del pensiero filosofico, ciò che muove ogni azione, soprattutto in ambito clinico e (...)
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  43. Ateismo.Antonio Di Loreto - 1973 - S. Atto di Teramo,: Edigrafital.
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  44.  2
    Problematica dell'ateismo.Antonio Di Loreto - 1973 - L'Aquila: L. U. Japadre.
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  45.  28
    Vivere il tempo della malattia. Una riflessione interdisciplinare sui modi dell'aver cura.Antonio Di Somma - 2022 - Rivista Italiana di Cure Palliative 24 (3):157-159.
    È possibile continuare a vivere in pienezza la propria vita nel tempo della malattia, del dolore e della sofferenza? Oppure il tempo personale invece si ferma, si paralizza, si frantuma quando irrompe nella vita la malattia? A partire da alcune riflessioni del filosofo tedesco Martin Heidegger è possibile intraprendere un breve confronto interdisciplinare con tali complessi interrogativi. Dinnanzi all’apparire della malattia e al non-manifestarsi della salute nel tempo della cura, la situazionalità emotiva dell’angoscia, tratteggiata in un’accezione del tutto particolare dall’autore (...)
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  46. Cura e persona in bioetica.Antonio Di Somma - 2017 - Dissertation, Università Degli Studi di Napoli Federico Ii
    Il lavoro presentato costituisce una ricerca interdisciplinare interessata ad approfondire sia teoreticamente che praticamente il rapporto essenziale, fondativo e dinamico tra cura e persona, le sue profonde implicazioni e la sua rilevanza etico-pratica nel contesto della riflessione bioetica e medico-sanitaria attuale. Attraverso un'analisi multidisciplinarmente fondata sono state rilevate le basi teoretiche per affrontare alcune specifiche situazioni-limite fronteggiate oggi in bioetica clinica, per giungere infine alla messa in evidenza del ruolo e del senso della speranza nella dimensione e rete contemporanea di (...)
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  47.  2
    Dio e il nulla: la religiosità atea di Emil Cioran.Antonio Di Gennaro & Pasquale Giustiniani (eds.) - 2019 - Milano: Mimesis.
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  48.  1
    L'uomo a più dimensioni: Alfred Schütz e le realtà multiple.Antonio Di Chiro - 2018 - Soveria Mannelli: Rubbettino.
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  49. Aparisi y Guijarro, las claves de la tradición política española: (homenaje a D. Antonio Aparisi y Guijarro, 1872-1972).Antonio Aparisi Y. Guijarro & Francisco Elías de Tejada Y. Spínola (eds.) - 1973 - Sevilla: Ediciones Montejurra.
     
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  50.  5
    Frames and MV-algebras.Lawrence Belluce & Antonio Nola - 2005 - Studia Logica 81 (3):357-385.
    We describe a class of MV-algebras which is a natural generalization of the class of “algebras of continuous functions”. More specifically, we're interested in the algebra of frame maps Hom\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${_{\cal F}}$$\end{document} (Ω(A), K) in the category T of frames, where A is a topological MV-algebra, Ω(A) the lattice of open sets of A, and K an arbitrary frame.Given a topological space X and a topological MV-algebra A, we have the algebra C (...)
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