In order to represent legal knowledge adequately, it is vital to create a formal device that can freely construct an individual concept directly from a predicate expression. For this purpose, a Compound Predicate Formula (CPF) is formulated for use in legal expert systems. In this paper, we willattempt to explain the nature of CPFs by rigorous logical foundation, i.e., establishing their syntax and semantics precisely through the use of appropriate examples. We note the advantages of our system over other such (...) systems and discuss the significance of CPFs with regard to the formalization of legal reasonings using examples from the United Nations Convention for the International Sale of Goods. (shrink)

This volume contains a selection of papers presented at the special workshop "Truth and Objectivity in Law and Morals," held at the 26th World Congress of the IVR. The papers deal with diverse but correlated issues such as the search for truth in and through legal argumentation; the intelligible character of rules inside theories of interpretation which guarantee the coherence and the integrity of law; the role of hermeneutic analysis in the construction of the objectivity of law; the procedural and (...) contextual aspects of objectivity in legal reasoning; the role of objectivity in the distinction between the context of justification and the context of discovery; the problem about truth of normative propositions and legal statements; the incompatibility of non factualism with the traditional account of validity and legality; as well as the possibility of objectivity in morals. (shrink)

In a legal expert system based on CBR (Case-Based Reasoning), legal statute rules are interpreted on the basis of precedents. This interpretation, because of its vagueness and uncertainty of the interpretation cannot be handled with the means used for crisp cases. In our legal expert system, on the basis of the facts of precedents, the statute rule is interpreted as a form of case rule, the application of which involves the concepts of membership and vagueness. The case rule is stored (...) in a data base by means of fuzzy frames. The inference based on a case rule is made by fuzzy YES and fuzzy NO, and the degree of similarity of cases. The system proposed here will be used for legal education; its main area of application is contract, especially in relation to the United Nations Convention on Contracts for the International Sale of Goods (CISG). (shrink)

This paper offers an explanation of how collaboration leads to abstract and flexible problem solving. We asked the individual and paired subjects to indicate 3/4 of 2/3 of the area of a square sheet of paper and found that (1) they primarily folded or partitioned the paper rather than algorithmically calculating the answer, (2) they strongly tendened to backtrack and confirm their proto‐plans on externalized traces such as creases on the paper, and (3) only the paired subjects shifted to the (...) mathematical strategy in their second trials. Based on these results, we propose that two factors, individuals' activeness in choosing and confirming the initial strategies and the frequent role exchange between task‐doing and monitoring in collaborative situations, interact in collaboration to generate various solutions differing in the degree of abstraction, which are then reflected upon by the participants to lead them to abstraction. (shrink)

We show, within the framework of Bishop's constructive mathematics, that (sequential) completeness of the locally convex space $\mathcal{D} (\mathbb{R})$ of test functions is equivalent to the principle BD-N which holds in classical mathemtatics, Brouwer's intuitionism and Markov's constructive recursive mathematics, but does not hold in Bishop's constructivism.

We show, within the framework of Bishop's constructive mathematics, that (sequential) completeness of the locally convex space $\mathcal{D} (\mathbb{R})$ of test functions is equivalent to the principle BD-N which holds in classical mathemtatics, Brouwer's intuitionism and Markov's constructive recursive mathematics, but does not hold in Bishop's constructivism.

We give a variant of the Gödel-Gentzen-negative translation, and a syntactic characterization which entails conservativity result for formulas.

中世から近世に移るカオスの中で人びとはどのように生き、社会の中で思想を形成していったか。本書はそこにみられる、近代が切り捨ててきた、人と人とのつながりを真摯に追求する。.

dai 1-kan. Ōgi ; Matsuri no genri -- dai 2-kan. Nihon kodai jujutsu ; Kakusareta kamigami -- dai 3-kan. Inʼyō gogyō shisō kara mita Nihon no matsuri -- dai 4-kan. Hebi ; Kitsune -- dai 5-kan. Nihonjin no shiseikan ; Inʼyō gogyō to Nihon no minzoku -- dai 6-kan. Eki to Nihon no saishi ; Inʼyō gogyō to jidō saishi -- dai 7-kan. Daijōsai ; Jitō Tennō -- dai 8-kan. Yama no kami ; Kamigami no tanjō -- dai 9-kan. Gogyō (...) junkan ; Jūnishi -- dai 10-kan. Daruma no minzokugaku ; In'yo gogyō to Nihon no tennō -- dai 11-kan. Eki, gogyō to Genji no sekai ; In'yo gogyō to Nihon no bunka -- dai 12-kan. Kodai Nihon no josei tennō ; Zassan. (shrink)

The aim of this short essay is to further reflect on sociology in Japan by supplementing discussions on the three sociological papers compiled in this volume and adding critical perspectives. Discussions, and arguments, will be provided on the three thematic categories, namely, , sociology of culture as well as language use, and the global academic market, the latter addressing not merely sociology but also other social sciences.

The purpose of this paper is to analyze the financial turmoil of the US subprime loan crisis of mid-Noughties and to compare it with the Japanese asset bubble of late 1980s. While examining the two crises, it compares the monetary policies of both countries, focusing on the excess liquidity and expansion of bank loans that were seen. This paper develops several bubble indicators, including the ratio of real estate loans to total loans, the loan-to-GDP ratio, and housing affordability. In order (...) to develop these indicators, it is necessary to compare banking behavior in both Japan and the United States, as banks in both countries were making loans beyond the point of profit maximization. Property prices and monetary policy in both countries influenced banking behavior significantly. The bubble indicators developed in this paper can be used as early warning indicators for future bubbles. (shrink)

Classically, weak König's lemma and Brouwer's fan theorem for detachable bars are equivalent. We give a direct constructive proof that the former implies the latter.

This article introduces English translations of Tanabe’s two essays entitled “Moral Freedom” and “On Moral Freedom Revisited.” In these essays, Tanabe tries to understand the unity of the contradictory division between freedom and necessity, while remaining truthful to the moral experience. Freedom is ultimately characterized as ideality that we ought to realize in reality, while the stage of religion constitutes the ultimate end of such moral struggles. Tanabe does not clearly work out how the continuity of the freedom-necessity discontinuity is (...) possible in these essays. Nevertheless, we can gain insight into the early stages of Tanabe’s practical metaphysics that culminate in his mature works on the philosophy of religion. The translators’ introduction will highlight these points and also provide a brief description of the historical background in which the publication of these texts took place in 1917. (shrink)

This paper presents the first English translation of one of Tanabe’s early essays on Kant. Tanabe marks the occasion of the first translation of the Critique of Practical Reason into Japanese by providing his reflections on Kant’s theory of freedom in this essay. This creative essay by Tanabe represents the hallmark Kyoto School interpretation of Kant. Tanabe weaves his account of Kant with elements from other philosophers in an attempt to think systematically about the nature of freedom. He agrees with (...) Kant that morality itself “rises and falls” with the idea of freedom; however, Tanabe also tries to rescue some of the pitfalls he sees in Kant’s theory by reconstructing Kant’s account. In this brief, but rich essay, Tanabe unfolds one of the more creative aspects of his philosophy through Kant. (shrink)

"Tanabe's agenda was not religious but philosophical in that he tried to integrate Eastern and Western insights in order to acquire a cross-cultural philosophical vision for the post-war world community.... This book shows his superior philosophical originality.... It is high time that Tanabe's thought should be introduced to the West."—Joseph Kitagawa, University of Chicago.

The purpose of this paper is an axiomatic study of the interrelations between certain continuity properties. We deal with principles which are equivalent to the statements "every mapping is sequentially nondiscontinuous", "every sequentially nondiscontinuous mapping is sequentially continuous", and "every sequentially continuous mapping is continuous". As corollaries, we show that every mapping of a complete separable space is continuous in constructive recursive mathematics (the Kreisel-Lacombe-Schoenfield-Tsejtin theorem) and in intuitionism.

We will overview the results in an informal approach to constructive reverse mathematics, that is reverse mathematics in Bishop’s constructive mathematics, especially focusing on compactness properties and continuous properties.

We will overview the results in an informal approach to constructive reverse mathematics, that is reverse mathematics in Bishop’s constructive mathematics, especially focusing on compactness properties and continuous properties.

The purpose of this paper is an axiomatic study of the interrelations between certain continuity properties. We show that every mapping is sequentially continuous if and only if it is sequentially nondiscontinuous and strongly extensional, and that "every mapping is strongly extensional", "every sequentially nondiscontinuous mapping is sequentially continuous", and a weak version of Markov's principle are equivalent. Also, assuming a consequence of Church's thesis, we prove a version of the Kreisel-Lacombe-Shoenfield-Tsĕitin theorem.

Many existence propositions in constructive analysis are implied by the lesser limited principle of omniscience LLPO; sometimes one can even show equivalence. It was discovered recently that some existence propositions are equivalent to Bouwer's fan theorem FAN if one additionally assumes that there exists at most one object with the desired property. We are providing a list of conditions being equivalent to FAN, such as a unique version of weak König's lemma. This illuminates the relation between FAN and LLPO. Furthermore, (...) we give a short and elementary proof of the fact that FAN is equivalent to each positive valued function with compact domain having positive infimum. (shrink)

This paper presents the first English translation of one of Tanabe’s early essays on Kant. Translated by Takeshi Morisato.

Aphasia is a language disorder that occurs after a stroke and impairs listening, speaking, reading, writing, and calculation skills. Patients with post-stroke aphasia in Japan are increasing due to population aging and the advancement of medical treatment. Opportunities for adequate speech therapy in chronic stroke are limited due to time constraints. Recent studies have reported that intensive speech therapy for a short period of time or continuous speech therapy using high-tech equipment, including speech applications (apps, can improve aphasia even in (...) the chronic stage. However, its underlying mechanism for improving language function and its effect on other cognitive functions remains unclear. In the present study, we investigated whether intensive speech therapy using a newly developed speech support app could improve aphasia and other cognitive functions in patients with chronic stroke. Furthermore, we examined whether it can alter the brain network related to language and other cortical areas. Thus, we conducted a prospective, single-comparison study to examine the effects of a new speech support app on language and cognitive functions and used resting state functional MRI (rs-fMRI) regions of interest (ROI) to ROI analysis to determine changes in the related brain network. Two patients with chronic stroke participated in this study. They used the independent speech therapy system to perform eight sets of 20 randomly presented words/time (taking approximately 20 min), for 8 consecutive weeks. Their language, higher cognitive functions including attention function, and rs-fMRI, were evaluated before and after the rehabilitation intervention using the speech support app. Both patients had improved pronunciation, daily conversational situations, and attention. The rs-fMRI analysis showed increased functional connectivity of brain regions associated with language and attention related areas. Our results show that intensive speech therapy using this speech support app can improve language and attention functions even in the chronic stage of stroke, and may be a useful tool for patients with aphasia. In the future, we will conduct longitudinal studies with larger numbers of patients, which we hope will continue the trends seen in the current study, and provide even stronger evidence for the usefulness of this new speech support app. (shrink)

La figure diabolisée du chat dans la littérature japonaise évolue sans cesse au cours de l’époque médiévale, et nous prenons ici l’exemple d’un chat-monstre nommé nekomata. L’un des exemples littéraires les plus connus se trouve dans les Heures oisives, ouvrage écrit vers 1330 par Yoshida Kenkô. Il semble cependant que le terme nekomata soit apparu un siècle plus tôt, comme le montre l’entrée du 2 août 1233 dans le Journal de la lune brillante de Fujiwara no Teika, l’un des plus (...) grands poètes de son temps. Nous analyserons donc ce texte de première importance pour comprendre les origines de cette figure littéraire, puis tenterons de comprendre le sens de l’expression nekomata. The demonized figure of the cat in Japanese literature evolved constantly during medieval times, and here we take the example of a monster cat named nekomata. One of the best-known literary examples is found in Tsurezure-gusa, written around 1330 by Yoshida Kenkô. However, it seems that the term nekomata appeared a century earlier, as can be seen from the August 2, 1233 entry in Meigetsu-ki, the diary of Fujiwara no Teika, one of the greatest poets of his time. We will examine this important text for a better understanding of the history of the monster cat and reflect on the meaning of the term nekomata. (shrink)

La figure du chat fait son apparition dans la littérature japonaise au ixe siècle, mais son image évoluera de manière inattendue à l’époque médiévale. Des témoignages littéraires du xie et du xiie siècle, tels que les Notes de chevet de Sei Shônagon et Le Dit du Genji de Murasaki Shikibu, montraient clairement l’intérêt porté aux chats par les dames de cour. Pourtant, à partir du xiiie siècle, le félidé fera au contraire l’objet d’une forme de « diabolisation », et c’est (...) cette dimension plus inquiétante du chat que nous aimerions évoquer ici, à travers trois exemples tirés du Kokon chomon-jû, vaste recueil de contes et légendes. Cette œuvre méconnue en Europe est attribuée à Tachibana no Narisue et achevée en 1254. The figure of the cat made its appearance in Japanese literature in the 9th century, but its image evolved unexpectedly in medieval times. Literary evidence from the 11th and 12th centuries, such as the Bedside Notes by Sei Shônagon and The Tale of Genji by Murasaki Shikibu clearly showed the interest of court women in cats. However, from the 13th century, the feline became the object of a form of “demonization”, and it is this more disturbing dimension of the cat that we would like to describe here, through three examples taken from Kokon chomon-Jû, a vast collection of tales and legends. This work, unknown in Europe, has been attributed to Tachibana no Narisue and was completed in 1254. (shrink)

Uniform sequential continuity, a property classically equivalent to sequential continuity on compact sets, is shown, constructively, to be a consequence of strong continuity on a metric space. It is then shown that in the case of a separable metric space, uniform sequential continuity implies strong continuity if and only if one adopts a certain boundedness principle that, although valid in the classical, recursive and intuitionistic setting, is independent of Heyting arithmetic.