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Validity and actuality 有效性与现实性
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2014-01-01 DOI: 10.2143/LEA.227.0.3053511
Vittorio Morato
The notion of validity for modal languages could be defined in two slightly different ways. The first is the original definition given by S. Kripke, for which a formula Φ of a modal language L is valid if and only if it is true in every actual world of every interpretation of L. The second is the definition that has become standard in most textbook presentations of modal logic, for which a formula Φ of L is valid if and only if it is true in every world in every interpretation of L. For simple modal languages, “Kripkean validity” and “Textbook validity” are extensionally equivalent. According to E. Zalta, however, Textbook validity is an “incorrect” definition of validity, because: (i) it is not in full compliance with Tarski’s notion of truth; (ii) in expressively richer languages, enriched by the actuality operator, some obviously true formulas count as valid only if the Kripkean notion is used. The purpose of this paper is to show that (i) and (ii) are not good reasons to favor Kripkean validity over Textbook validity. On the one hand, I will claim that the difference between the two should rather be seen as the result of two different conceptions on how a modal logic should be built from a non-modal basis; on the other, I will show the advantages, for the question at issue, of seeing the actuality operator as belonging to the family of two-dimensional operators.
模态语言的有效性概念可以用两种稍微不同的方式定义。首先是原始的定义由s .克里普克的公式Φ模态语言L是有效当且仅当它是正确的在每一个实际的世界的解释L .第二个是定义在大多数教科书式的演讲已经成为标准模态逻辑,为一个公式ΦL是有效当且仅当它是正确的在每一个世界,每一个L .简单模态语言的解释“Kripkean有效性”和“教科书有效性”是外延性等价的。然而,根据E. Zalta的说法,教科书的效度是一个“不正确的”效度定义,因为:(i)它并不完全符合塔斯基的真理概念;(ii)在表达更丰富的语言中,一些明显为真的公式只有在使用Kripkean概念时才算有效。本文的目的是表明(i)和(ii)不是支持Kripkean效度而不是教科书效度的好理由。一方面,我将声称两者之间的差异应该被看作是关于如何从非模态基础构建模态逻辑的两种不同概念的结果;另一方面,对于正在讨论的问题,我将展示将现实操作符视为属于二维操作符族的优点。
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引用次数: 0
More Reflections on Consequence 关于后果的更多思考
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2014-01-01 DOI: 10.2143/LEA.227.0.3053505
Julien Murzi, Massimiliano Carrara
This special issue collects together nine new essays on logical consequence: the relation obtaining between the premises and the conclusion of a logically valid argument. The present paper is a partial, and opinionated, introduction to the contemporary debate on the topic. We focus on two influential accounts of consequence, the model-theoretic and the proof-theoretic, and on the seeming platitude that valid arguments necessarily preserve truth. We briefly discuss the main objections these accounts face, as well as Hartry Field’s contention that such objections show consequence to be a primitive, indefinable notion, and that we must reject the claim that valid arguments necessarily preserve truth. We suggest that the accounts in question have the resources to meet the objections standardly thought to herald their demise and make two main claims: (i) that consequence, as opposed to logical consequence, is the epistemologically significant relation philosophers should be mainly interested in; and (ii) that consequence is a paradoxical notion if truth is.
这期特刊收集了九篇关于逻辑推论的新文章:逻辑有效论证的前提和结论之间的关系。本文是对当代关于这一话题的辩论的一个片面的、自以为是的介绍。我们关注两种有影响力的结果解释,模型论和证明论,以及有效论证必然保持真理这一看似老生常谈的观点。我们简要地讨论这些说法面临的主要反对意见,以及哈里·菲尔德的论点,即这些反对意见表明结果是一个原始的、不可定义的概念,我们必须拒绝有效论证必然保持真理的主张。我们认为,所讨论的论述有足够的资源来满足通常被认为预示着它们灭亡的反对意见,并提出两个主要主张:(i)与逻辑推理相反的结果,是哲学家应该主要感兴趣的认识论上重要的关系;(二)如果真理存在,那么结果就是一个矛盾的概念。
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引用次数: 3
Deciding and time : refusing devilish offers 决定和时间:拒绝邪恶的提议
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2014-01-01 DOI: 10.2143/LEA.225.0.3011355
K. Zahidi
in Gracely’s decision theoretic puzzle, the Devil’s offer, a subject is offered to take part in a lottery in which she stands to win eternal bliss or eternal torment. her chances of winning the lottery increase as time elapses. expected utility maximization seems to lead to the paradoxical situation in which the subject indefinitely postpones the lottery, resulting in the least desirable outcome. however, as various authors have pointed out with respect to decision problems similar to the Devil’s offer, the reasoning that leads to the paradoxical conclusion is not valid. in particular, distinguishing between a synchronic and diachronic version of decision problems in which the number of choice options is infinite, allows for a fine-grained analysis of the requirements of rational decision making. The aim of this paper is twofold. i will show that Arntzenius et al.’s (2004) analysis of problems that are structurally similar to Gracely’s decision problem can be adapted to show that the latter can be handled within Bayesian decision theory. furthermore, i will discuss a variation on the diachronic version of the Devil’s offer, in which the subject is unaware of the fact that she is confronted with infinitely many choices. This modified version seems to be a genuine case in which the principle of utility maximization leads to a paradoxical result. however, i will show that this paradox is only apparent and that the problem can also be resolved within a broadly Bayesian conception of rationality.
在格雷斯利的决策理论谜题《魔鬼的提议》中,受试者被邀请参加彩票,她将赢得永恒的幸福或永恒的折磨。随着时间的推移,她中彩票的机会越来越大。期望效用最大化似乎导致了一个矛盾的情况,即受试者无限期地推迟抽签,导致最不理想的结果。然而,正如许多作者指出的,关于类似于魔鬼的提议的决策问题,导致自相矛盾结论的推理是无效的。特别是,区分决策问题的共时版本和历时版本(其中选择选项的数量是无限的),允许对理性决策制定的需求进行细粒度分析。本文的目的是双重的。我将展示Arntzenius等人(2004)对结构上与Gracely的决策问题相似的问题的分析,以表明后者可以在贝叶斯决策理论中处理。此外,我将讨论魔鬼提议的历时版本的一个变化,在这个版本中,主题没有意识到她面临着无限多的选择。这个修改后的版本似乎是一个真实的案例,其中效用最大化原则导致了一个矛盾的结果。然而,我将表明,这个悖论只是表面上的,这个问题也可以在广义的贝叶斯理性概念中得到解决。
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引用次数: 0
A NOTE ON LOGICAL TRUTH 关于逻辑真理的注释
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2014-01-01 DOI: 10.2143/LEA.227.0.3053508
Corine Besson
Classical logic counts sentences such as ‘Alice is identical with Alice’ as logically true. A standard objection to classical logic is that Alice’s self-identity, for instance, is not a matter of logic because the identity of particular objects is not a matter of logic. For this reason, many philosophers argue that classical logic is not the right logic, and that it should be abandoned in favour of free logic — logic free of existential commitments with respect to singular terms. In most standard free logics, sentences such as ‘Alice is identical with Alice’ are not logically true. This paper argues that this objection from existential commitments is somewhat superficial and that there is a deeper reason why ‘Alice is identical with Alice’ should not be considered a logical truth. Indeed, a key fundamental thought about the nature of logic is that a logical truth is true in virtue of its logical form. The fundamental problem I raise is that a sentence such as ‘Alice is identical with Alice’ appears to not even be true in virtue of its logical form. Thus this paper argues that given that such a sentence is not true in virtue of its logical form, it should not be counted as logically true. It moreover argues, on the same grounds, that even the sentences which free logicians regard as logically true shouldn’t be regarded as logically true. So in this sense free logic is no repair to classical logic. I. Introduction The paper is organised as follows. In sections II and III, I outline the standard problem of existential commitments for classical logic, as well as its standard solution in terms of free logic. Doing this will be useful to set up the key issue of the paper. Section IV then moves to considerations about logical form and outlines a new problem for sentences such as ‘Alice is identical with Alice’ being considered logical truths. Sections IV-XI put forward considerations meant to cast doubt on the idea that sentences such as ‘Alice is identical with Alice’ are logical truths in the formal sense. Section XII elaborates on these considerations and offers a way of thinking of the relationship of sentences such as ‘Alice is identical with Alice’ to logical truths proper.
经典逻辑认为诸如“爱丽丝与爱丽丝是相同的”这样的句子在逻辑上为真。经典逻辑的一个标准反对意见是,举例来说,爱丽丝的自我同一性不是逻辑问题,因为特定对象的同一性不是逻辑问题。出于这个原因,许多哲学家认为经典逻辑不是正确的逻辑,应该放弃它,转而支持自由逻辑——即不涉及单项存在性承诺的逻辑。在大多数标准的自由逻辑中,像“Alice和Alice是相同的”这样的句子在逻辑上是不正确的。本文认为,存在性承诺的这种反对意见有些肤浅,“爱丽丝与爱丽丝是同一的”不应被视为逻辑真理有更深层次的原因。事实上,关于逻辑本质的一个关键的基本思想是,逻辑真理因其逻辑形式而为真。我提出的基本问题是,像"爱丽丝与爱丽丝是同一的"这样的句子,从其逻辑形式来看,似乎甚至都不是真的。因此,本文认为,鉴于这样一个句子在其逻辑形式上不为真,它不应被视为逻辑真。而且,基于同样的理由,它还认为,即使是自由逻辑学家认为逻辑为真的句子也不应该被认为是逻辑为真。所以在这个意义上,自由逻辑不是对经典逻辑的修复。本文的组织结构如下:在第二节和第三节中,我概述了经典逻辑中存在行为的标准问题,以及它在自由逻辑中的标准解。这样做将有助于建立论文的关键问题。然后,第四节转向对逻辑形式的考虑,并概述了一个新问题,即“爱丽丝与爱丽丝相同”这样的句子被认为是逻辑真理。第四节至第十一节提出了一些思考,旨在对诸如"爱丽丝与爱丽丝是同一的"这样的句子是形式意义上的逻辑真理这一观念提出质疑。第十二节详细阐述了这些考虑,并提供了一种思考诸如“爱丽丝与爱丽丝是同一的”这样的句子与逻辑真理固有关系的方法。
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引用次数: 2
On the connection between Nonstandard Analysis and Constructive Analysis 论非标准分析与建构分析的关系
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2013-01-01 DOI: 10.14288/1.0348311
Sam Sanders
Constructive Analysis and Nonstandard Analysis are often characterized as completely antipodal approaches to analysis. We discuss the possibility of capturing the central notion of Constructive Analysis (i.e. algorithm, finite procedure or explicit construction) by a simple concept inside Nonstandard Analysis. To this end, we introduce Omega-invariance and argue that it partially satisfies our goal. Our results provide a dual approach to Erik Palmgren's development of Nonstandard Analysis inside constructive mathematics.
建设性分析和非标准分析通常被认为是完全对立的分析方法。我们讨论了通过非标准分析中的一个简单概念来捕获构造分析(即算法,有限过程或显式构造)的中心概念的可能性。为此,我们引入omega -不变性,并认为它部分地满足了我们的目标。我们的结果为Erik Palmgren在构造数学中发展非标准分析提供了一个双重途径。
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引用次数: 2
Perception as action 感知即行动
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2013-01-01 DOI: 10.5040/9781492595625.ch-005
M. Conduct
In this paper I take seriously the idea that perceptual experiences, the sensory experiences that we enjoy when perceiving, are mental actions. I provide a picture that identifies them as a species of basic action and in so doing combine disjunctive accounts of experience and action. Disjunctivism about sensory experience is usually put forward to defend naive realism and I argue that a view of perception as a form of action can help the naive realist position. It does so in three ways. First, it offers an account of the determination of phenomenal character that is in accord with the key commitments of naive realism but that is less susceptible to the argument from illusion. Second, it provides an account of the relation between hallucinatory experience and perceptual experience. Third, it takes two different debates about disjunctivism as a thesis about action, and disjunctivism as a thesis about perception, and reduces the latter to just a special case of the former.
在这篇论文中,我认真地考虑了这样一个观点,即感知体验,即我们在感知时享受的感官体验,是心理活动。我提供了一幅图景,将它们识别为基本行动的一种,并以此将经验和行动的分离描述结合起来。关于感官经验的分离论通常是用来为朴素实在论辩护的我认为,将知觉视为一种行为形式的观点可以帮助朴素实在论的立场。它通过三种方式做到了这一点。首先,它提供了一种关于现象性决定的解释它与朴素实在论的关键承诺是一致的但它不太容易受到来自幻觉的论证的影响。其次,它提供了幻觉经验和知觉经验之间的关系的帐户。第三,它采用了两种不同的辩论,即作为行动论题的分离论和作为感知论题的分离论,并将后者简化为前者的一个特例。
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引用次数: 2
Attitudes Toward Mathematics Integration and Related Professional Development Needs of Outstanding Agricultural Education Instructors 优秀农业教育教师对数学整合的态度及相关专业发展需求
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2012-05-01 DOI: 10.21061/JCTE.V27I1.541
Ryan G. Anderson
Agricultural education has been present in public schools since their development in America. Minnesota was the first state to offer secondary agricultural education with the first school organized in 1888.Phipps and Osborne (1988)noted that agricultural education has developed deep philosophical roots, placing a great deal of emphasis on pragmatism. “The practical application and successful transfer of knowledge, skills, and attitudes into real-world settings is the goal of instruction” (p. 19).Phipps and Osborne (1988)further acknowledged that “agricultural education has been cited as an innovative program model for education, in order to maintain an innovative program, efforts have been made to reshape agricultural education programs to ensure their continued value, relevance, vitality, and quality” (p. 14).
农业教育自美国公立学校发展以来一直存在于公立学校。明尼苏达州是第一个提供中等农业教育的州,1888年成立了第一所学校。菲普斯和奥斯本(1988)指出,农业教育具有深厚的哲学根源,非常强调实用主义。“将知识、技能和态度的实际应用和成功转移到现实环境中是教学的目标”(第19页)。菲普斯和奥斯本(1988)进一步承认,“农业教育被引用为教育的创新项目模式,为了保持创新项目,人们努力重塑农业教育项目,以确保其持续的价值、相关性、活力和质量”(第14页)。
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引用次数: 4
Set matrix theory as a physically motivated generalization of Zermelo-Fraenkel set theory 集合矩阵理论作为Zermelo-Fraenkel集合理论的物理动机推广
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2012-02-09 DOI: 10.2143/LEA.225.0.3011356
M. Cabbolet, H. Swart
Recently, the Elementary Process Theory (EPT) has been developed as a set of fundamental principles that might underlie a gravitational repulsion of matter and antimatter. This paper presents set matrix theory (SMT) as the foundation of the mathematicallogical framework in which the EPT has been formalized: it is, namely, objectionable to use Zermelo-Fraenkel set theory (ZF) as such. SMT is a generalization of ZF: whereas ZF uses only sets as primitive objects, in the framework of SMT nite matrices with set-valued entries are objects sui generis, with a 1 1 set matrix [x] being identical to the set x. It is proved that every set that can be constructed in ZF can also be constructed in SMT: as a mathematical foundation, SMT is thus not weaker than ZF. In addition, it is shown that SMT is more suitable than ZF for the intended application to physics. The conclusion is that SMT, contrary to ZF, is acceptable as the mathematical-logical foundation of the framework for physics that is determined by the EPT.
最近,基本过程理论(EPT)已经发展成为一套基本原理,可能是物质和反物质引力排斥的基础。本文提出了集合矩阵理论(SMT)作为EPT形式化的数学框架的基础:即,使用Zermelo-Fraenkel集合理论(ZF)是令人反感的。SMT是ZF的推广:而ZF只使用集合作为原始对象,在SMT的框架中,具有集值项的矩阵是自属对象,具有1 1集合矩阵[x]与集合x相同。证明了每一个可以在ZF中构造的集合也可以在SMT中构造:作为数学基础,SMT并不弱于ZF。此外,还表明SMT比ZF更适合于预期的物理应用。结论是,与ZF相反,SMT可以作为由EPT决定的物理框架的数学逻辑基础。
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引用次数: 3
Implications Of Severe Economic Decline & Demographic Pressures On Youth Literacy In Sub-Saharan Africa 撒哈拉以南非洲严重的经济衰退和人口压力对青年识字率的影响
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2011-01-10 DOI: 10.19030/CIER.V2I2.1094
C. Okpala
Although literacy rates have improved somehow in recent years, there are still large numbers of people that are illiterates in developing countries. This paper examines the impact of severe economic decline and demographic pressures on youth literacy rate in Sub-Saharan Africa. In this study, a cross-sectional data of 39 Sub-Saharan African countries with adequate data information were analyzed. The results from the ANOVA tests indicate that economic decline is statistically significant in explaining youth literacy, while the results from demographic pressures and movement of refugees are inconclusive in explaining youth literacy.
尽管近年来识字率有所提高,但在发展中国家仍有大量的人是文盲。本文考察了撒哈拉以南非洲地区严重的经济衰退和人口压力对青年识字率的影响。在这项研究中,对39个撒哈拉以南非洲国家的截面数据进行了分析,并提供了充分的数据信息。方差分析的结果表明,经济衰退在解释青年识字率方面具有统计意义,而人口压力和难民流动的结果在解释青年识字率方面则不具有决定性。
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引用次数: 1
On determining the risk exposure of energy contamination in the EIA 环境影响评价中能源污染风险暴露的确定
IF 0.3 3区 哲学 Q1 Arts and Humanities Pub Date : 2010-01-01 DOI: 10.15587/1729-4061.2010.2768
Галина Абрамова
Investigate questions about the effects of energy contamination on the environment in assessing the impact on the environment. The system of indices, which allows us to estimate the impact of such contamination and to establish their level. The method for determining the risk of impact of energy pollution in assessing the impact on the environment.
在评估能源污染对环境的影响时,调查能源污染对环境的影响。指数系统,它使我们能够估计这种污染的影响,并建立其水平。在评估能源污染对环境的影响时,确定其影响风险的方法。
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引用次数: 0
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