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After defining ‘real’ and ‘ideal’ in relation to character or behaviour and to setting, this chapter notes that, whereas the other four Greek ‘ideal’ novelists create a realistic background, whether using personal observation or historiography, Longus draws chiefly on literary texts that themselves present a fictional world (Homer and Theocritus) or one that is semi-fictional (archaic melic poetry). ‘The Country’ explores Longus’ debt to Theocritus’ landscape, especially that of Idyll 1, advertised by his preface as several steps removed from the real world. The chapter then discusses the relation of 2.32 to Theocritus 1; of 1.17.3 to Sappho and Anacreon via Theocritus 11, complicated by the term ἀληθῶς, ‘really’; and of the apple at 3.33.4 to Sappho’s epithalamia, Ibycus, and Theocritus 28. ‘The city’ explores the literary forebears of Longus’ Megacles; ‘The sea’ looks at his ‘Tyrian’ pirates’ origins in earlier novels, especially Chariton’s; and ‘Reality’ considers how his use of Thucydides underlines his own fictionality. Overall it is the chapter’s stress on the fictionality, rather than on the poetic status, of most of Longus’ intertexts that differentiates its writer’s position from those of Richard Hunter and Maria Pia Pattoni.
Complex numbers are a critical component of the mathematics of quantum mechanics, so we provide a brief review. Topics include imaginary numbers, Euler’s formula, modulus, phase, and complex conjugate.
Altieri’s chapter defines four basic modes of thinking in Wallace Stevens’s poetry. Harmonium (1923) reconceives what poetic thinking can be—from an ideal of cogent masculine argument to the possibility of thinking against generalization. Such thinking offers allegories that fascinate without resolving. And it shifts the sensuality of poetry from an emphasis on referring to sensuous detail to a lyric sensuality that is basic to the forms of concreteness established by the workings of the medium. Second, Stevens turns in Ideas of Order (1936) from valuing the eccentric to imagining how poetic thinking can become central to ordinary life. Third, by the final poems of Transport to Summer (1947), Stevens seems to become embarrassed by his own rhetoric of the hero and major man. He becomes increasingly concerned with blending the unreal of fiction with the work of realization, a concept strikingly parallel to Paul Cézanne’s idea of how art brings force and vitality to nature. Finally, that theoretical concern for blending fictionality with realization generates in The Rock (1954) a mode of poetic thinking inseparable from a sense of self-conscious dwelling that enables us to value the artifice present in even the most elemental of experiences.
To define a generic diet to protect human health and food system sustainability based on three dimensions: animal:plant ratio, degree of food processing and food diversity.
Design/setting:
The percentages of maximum animal and ultra-processed energy content were evaluated from scientific papers (Web of Science database) and reports from international scientific institutions. Then, a weekly French standard diet, including these percentages and food diversity (≥42 different foods), was designed to calculate adequacy to nutritional needs.
Results:
Based on traditional and scientifically based healthy diets, and on foresight scenarios for sustainable diets at horizon 2050, a median daily animal energy content intake of 15 % was found to be protective towards both human health and environment. Based on epidemiological studies associating ultra-processed energy consumption with increased overweight/obesity risk, a precautionary threshold of approximately 15 % ultra-processed energy content was observed. The French diet allows addressing all nutritional needs and other nutritional indicators such as maximum salt and simple sugar consumption, α-linolenic acid:linoleic acid ratio and essential amino acids. This diet was named the ‘3V rule’ for Végétal (plant), Vrai (real) and Varié (varied, if possible organic, local and seasonal). This generic diet can be adapted according to regional traditions and environmental characteristics. Excluding only one dimension of it would threaten both health and food system sustainability.
Conclusions:
Tending towards a 3V-based diet, while respecting local constraints, should allow preserving human health, environment (greenhouse gas emissions, pollution, deforestation, etc.), small farmers, animal welfare and biodiversity, culinary traditions and socioeconomics (including an alleviation of public health cost).
Tropes of Indigeneity both conceal and expose the tangle of land, labor, and race in the American southern context. This introduction poses Indian Removal as the underacknowledged historical thunderclap, akin to the Civil War, after which the South struggled permanently to regenerate its self-conception. In the narratives of modern and contemporary white southerners, the story of the southeastern Indian is inextricable from the white South’s story about itself - a structure built on preoccupations with loss, dispossession, sovereignty, and community. The Indian motif marks the passage from the white southern specular self to its socially constituted version, and the maintenance of that self is, in many ways, dependent on the internalization of an elaborate Indigenous fiction. What that narrative both covers over and exposes is haunting in more ways than we have realized: it is, finally, a revelatory model of not just settler colonial extermination but of the vacancies, desires, and horrors of a modernity constructed on the twin phantoms of materialism and racialism.
We construct the real numbers using equivalence classes of Cauchy sequences and show that they obey the fundamental axiom and the standard rules of arithmetic.
We show that the rationals will not support calculus. Using the intermediate value theorem, we discuss the properties required by a number system to allow us to do calculus. We state the fundamental axiom of analysis and obtain various equivalent forms of that axiom.
Why do we need the real numbers? How should we construct them? These questions arose in the nineteenth century, along with the ideas and techniques needed to address them. Nowadays it is commonplace for apprentice mathematicians to hear 'we shall assume the standard properties of the real numbers' as part of their training. But exactly what are those properties? And why can we assume them? This book is clearly and entertainingly written for those students, with historical asides and exercises to foster understanding. Starting with the natural (counting) numbers and then looking at the rational numbers (fractions) and negative numbers, the author builds to a careful construction of the real numbers followed by the complex numbers, leaving the reader fully equipped with all the number systems required by modern mathematical analysis. Additional chapters on polynomials and quarternions provide further context for any reader wanting to delve deeper.
Readers learn about numeric arrays and data types such as integer, long, floating-point and double. They are shown how to import the array library, define an array in Python, append data, extend and combine arrays, remove items from an array along with sort and reverse arrays. They complete eight challenges to explore using numeric arrays in Python.