These comments start, as they must, from the text of I. Hilberg in the Vienna corpus.1 This was the first properly critical edition of the Letters,and has not been superseded. It is, however, not without its limitations. In establishing his text Hilberg considered only a few MSS for each letter: for epist.1, seven, and for epist.107, six, in one of which the letter is represented twice, though in neither case is it complete.Hilberg promised a volume of prolegomena and indices to (...) accompany his text;2 but it seems that he died before it could appear, and we do not know how he assessed his MSS, or how many he consulted before making his choice.What we do know is that those on which he relied form a very small proportion of those which exist.B.Lambert′s catalogue of Jerome MSS3 lists 138 for epist.1 and 145 for epist.107, of which ten and thirteen respectively are dated ninth-to-tenth-century or earlier - and Lambert is well aware that his list cannot pretend to be exhaustive.4 Furthermore, there is some reason to doubt the accuracy of the collations which form the basis of Hilberg′s edition.5 It is evident that much work remains to be done before a definitive edition can be produced.Meanwhile Hilberg′s text is the best we have, and where I cite MSS I follow the readings of his apparatus criticus.6 The phrase ‘the MSS’ refers, in this article, only to those which Hilberg utilised. (shrink)

The development of the typical cladomothallus of the red algae Antithaminion plumula (Ellis) Le Jolis [= Pterothamnion plumula (Ellis) Nägcli], (Rhodophyceae, Ceramiales) is simulated with the help of a formal language called L-systems. Two types of uniseriate filaments are distinguished: axial filaments of cladomes with indefinite growth and branching and pleuridia with definite growth and branching. The rythmical acropetal formation of secondary axes with basitonic arrangement contrasts with the intercalary basitonic formation of pleuridia, resulting in an acrotonic arrangement within an (...) axial segment. Five types of cells and two types of cell divisions intervene in the system. In addition, for the graphical representations, some morphological particularities of A. plumula are taken into account: the curvature of axial filaments, the extension of growth zones, variable cell generation times, and segment length variability along an axis. The incidence of these variables on the generated thallus form is emphasized, pointing to the singularities of A. plumula. (shrink)

The essays in this volume are based on addresses presented during a colloquium on free logic, modal logic and related areas held at the University of California at Irvine, in May of 1968. With the single exception of Dagfinn F011esdal, whose revised address is included in a recent issue of Synthese honoring W. V. Quine, all of the speakers at the Irvine colloquium are contributors to this volume. Thanks are due to Professor A. I. Melden, Chairman of the Department of (...) Philosophy at Irvine, for his enthusiastic support of the colloquium, and to Drs. Gordon Brittan and Daniel Dennett for their help in the administration of the colloquium. Finally. I should also like to thank Professor Ralph W. Gerard, Dean of the Graduate Division of the University of California at Irvine, for the financial support which made the colloquium possible. KAREL LAMBERT Laguna Beach, California, 1969 TABLE OF CONTENTS PREFACE V KAREL LAMBERT and BAS C. VAN FRAASSEN/ Meaning Relations, Possible Objects, and Possible Worlds 1 JAAKKO HINTIKKA / Existential Presuppositions and Uniqueness Presuppositions 20 RICHMOND H. THOMASON / Some Completeness Results for Modal Predicate Calculi 56 H. LEBLANC and R. K. MEYER / Truth-Value Semantics for the Theory of Types 77 J. M. VICKERS / Probability and Non Standard Logics 102 PETER W. WOODRUFF / Logic and Truth Value Gaps 121 DANA SCOTT / Advice on Modal Logic 143 INDEX OF NAMES 175 KAREL LAMBER T AND BAS C. (shrink)

The essays in this volume are based on addresses presented during a colloquium on free logic, modal logic and related areas held at the University of California at Irvine, in May of 1968. With the single exception of Dagfinn F011esdal, whose revised address is included in a recent issue of Synthese honoring W. V. Quine, all of the speakers at the Irvine colloquium are contributors to this volume. Thanks are due to Professor A. I. Melden, Chairman of the Department of (...) Philosophy at Irvine, for his enthusiastic support of the colloquium, and to Drs. Gordon Brittan and Daniel Dennett for their help in the administration of the colloquium. Finally. I should also like to thank Professor Ralph W. Gerard, Dean of the Graduate Division of the University of California at Irvine, for the financial support which made the colloquium possible. KAREL LAMBERT Laguna Beach, California, 1969 TABLE OF CONTENTS PREFACE V KAREL LAMBERT and BAS C. VAN FRAASSEN/ Meaning Relations, Possible Objects, and Possible Worlds 1 JAAKKO HINTIKKA / Existential Presuppositions and Uniqueness Presuppositions 20 RICHMOND H. THOMASON / Some Completeness Results for Modal Predicate Calculi 56 H. LEBLANC and R. K. MEYER / Truth-Value Semantics for the Theory of Types 77 J. M. VICKERS / Probability and Non Standard Logics 102 PETER W. WOODRUFF / Logic and Truth Value Gaps 121 DANA SCOTT / Advice on Modal Logic 143 INDEX OF NAMES 175 KAREL LAMBER T AND BAS C. (shrink)

Se ha intentado realizar una traducción literal del texto de Lambert. En contadas ocasiones se han substituido construcciones sintácticas del alemán por otras que facilitan, a juicio del traductor, la lectura del texto en español. Asimismo, en algunos pasajes se han alterado los signos de puntuación, con la finalidad señalada.

This book brings together some of the best minds in neurology and philosophy to discuss the concept of personal identity and the moral dimensions of treating ...

The author argues that there is a sharp contrast between Plato's earlier teleological explanation of nature and his later conception. In the Phaedo Anaxagoras' νοṽς as a teleological principle is rejected, the forms taking its place, in the Philebus the existence of a νοṽς explaining order and finality in nature, is strictly demonstrated. After that nature and consequences of this new doctrine are briefly discussed : the ineffable character of the transcendent cause of the world ; the reduction of the (...) number of the Forms to those of substances in nature ; the causality of νοṽς as an immanent and intermediate one ; the foundation of a mathematical science of nature. Thirdly the author makes an effort to reconstruct the philosophical grounds of this development, starting from the three theses, on which the argumentation of the Philebus is based. 1) νοṽς can only exist in a soul. It is argued that the dynamic conception of soul in the Phaedrus logically leads to the conclusion, that νοṽς also is movement . 2) To explain cosmic order and finality a νοṽς has to be accepted. This new idea occurs for the first time in the Sophistes and in the myth of the Politicus. 3) Cosmic order has a mathematical and astronomical character. This aspect is absent before the Philebus and seems to have been a consequence of Plato's discovery of the regularity in the planitary motions . Finally the author thinks he can indicate in the Sophistes the turning-point in the theory of Forms, as a result of the extension of the notion of being. (shrink)

A total of 944 expressed sequence tags generated 2212 EST loci mapped to homoeologous group 1 chromosomes in hexaploid wheat. EST deletion maps and the consensus map of group 1 chromosomes were constructed to show EST distribution. EST loci were unevenly distributed among chromosomes 1A, 1B, and ID with 660, 826, and 726, respectively. The number of EST loci was greater on the long arms than on the short arms for all three chromosomes. The distribution of ESTs along chromosome arms (...) was nonrandom with EST clusters occurring in the distal regions of short arms and middle regions of long arms. Duplications of group 1 ESTs in other homoeologous groups occurred at a rate of 35.5%. Seventy-five percent of wheat chromosome 1 ESTs had significant matches with rice sequences, where large regions of conservation occurred between wheat consensus chromosome 1 and rice chromosome 5 and between the proximal portion of the long arm of wheat consensus chromosome 1 and rice chromosome 10. Only 9.5% of group 1 ESTs showed significant matches to Arabidopsis genome sequences. The results presented are useful for gene mapping and evolutionary and comparative genomics of grasses. (shrink)

As theorists, developers, and practitioners of the anticipatory governance of emerging technologies, we applaud Ankeny et al.’s...

A naturalistic theory of intentionality is proposed that differs from previous evolutionary and tracking theories. Full-blown intentionality is constructed through a series of evolvable refinements. A first, minimal version of intentionality originates from a conjectured internal process that estimates an organism’s own fitness and that continually modifies the organism. This process produces the directedness of intentionality. The internal estimator can be parsed into intentional components that point to components of the process that produces fitness. It is argued that such intentional (...) components can point to mistaken or non-existing entities. Different Fregian senses of the same reference correspond to different components that have different roles in the estimator. Intentional components that point to intentional components in other organisms produce directedness towards semi-abstract entities. Finally, adding a general, population-wide means of communication enables intentional components that point to fully abstract entities. Intentionality thus naturalized has all of its expected properties: being directed; potentially making errors; possibly pointing to non-existent, abstract, or rigid entities; capable of pointing many-to-one and one-to-many; distinguishing sense and reference; having perspective and grain; and having determinate content. Several examples, such as ‘swampman’ and ‘brain-in-a-vat’, illustrate how the theory can be applied. (shrink)

A number of recent books and articles have defended the concept of de re modality. Although Slote makes some contributions toward its defense, he is mainly concerned with using de re modality to provide analyses of key concepts in metaphysics, including "process", "event", "change", "physical body", "self", "future", "past", "fact", and "state of affairs". Each concept is defined by essence and accident, that is, by specifying what is either accidental or essential to the entities covered by the concept. Such definitions (...) focus on the ontological relationships of exact similarity, necessary coexistence, and logical dependence. They provide the necessary existence conditions for processes, events, selves, etc. These existence conditions are a major concern in metaphysical questions about the relationship between psychic and physical existence, selves and their experiences, and things and their alterations. Thus Slote provides an important analytical procedure for this type of metaphysical problem. (shrink)

J. H. Lambert proved important results of what we now think of as non-Euclidean geometries, and gave examples of surfaces satisfying their theorems. I use his philosophical views to explain why he did not think the certainty of Euclidean geometry was threatened by the development of what we regard as alternatives to it. Lambert holds that theories other than Euclid's fall prey to skeptical doubt. So despite their satisfiability, for him these theories are not equal to Euclid's in (...) justification. Contrary to recent interpretations, then, Lambert does not conceive of mathematical justification as semantic. According to Lambert, Euclid overcomes doubt by means of postulates. Euclid's theory thus owes its justification not to the existence of the surfaces that satisfy it, but to the postulates according to which these "models" are constructed. To understand Lambert's view of postulates and the doubt they answer, I examine his criticism of Christian Wolff's views. I argue that Lambert's view reflects insight into traditional mathematical practice and has value as a foil for contemporary, model-theoretic, views of justification. (shrink)

This book deals with Johann Heinrich Lamberts epistemological foundation of scientific knowledge and with his linear diagrams of logical reasoning.

Feedback control in neural systems is ubiquitous. Here we study the mathematics of nonlinear feedback control. We compare models in which the input is multiplied by a dynamic gain (multiplicative control) with models in which the input is divided by a dynamic attenuation (divisive control). The gain signal (resp. the attenuation signal) is obtained through a concatenation of an instantaneous nonlinearity and a linear low-pass filter operating on the output of the feedback loop. For input steps, the dynamics of gain (...) and attenuation can be very different, depending on the mathematical form of the nonlinearity and the ordering of the nonlinearity and the filtering in the feedback loop. Further, the dynamics of feedback control can be strongly asymmetrical for increment versus decrement steps of the input. Nevertheless, for each of the models studied, the nonlinearity in the feedback loop can be chosen such that immediately after an input step, the dynamics of feedback control is symmetric with respect to increments versus decrements. Finally, we study the dynamics of the output of the control loops and find conditions under which overshoots and undershoots of the output relative to the steady-state output occur when the models are stimulated with low-pass filtered steps. For small steps at the input, overshoots and undershoots of the output do not occur when the filtering in the control path is faster than the low-pass filtering at the input. For large steps at the input, however, results depend on the model, and for some of the models, multiple overshoots and undershoots can occur even with a fast control path. (shrink)

Tragic allusions to contemporary events are not, as a rule, taken on trust, but the Eumenides of Aeschylus provides three notable exceptions. The view that the Athenian-Argive alliance of 462 B.C. is reflected in Eum. 287–91, 667–73, anc^ 762–74 has won wide acceptance, although no systematic theory of the relation between the drama and the historical context has yet been advanced. If demonstration in detail has been wanting, the view seems to be supported by three general considerations. In the first (...) place, the emphasis put on the dramatic declaration of friendship exceeds the requirements of the plot: the acquittal of Orestes rather than his gesture of gratitude to Athens is the natural climax of this part of the drama, 1–777, and yet the gesture has been considered important enough to be heralded twice before it is actually made in 762–74. Secondly, Orestes' declaration is not limited in duration but binding on his successors in perpetuity; it seems, therefore, to have been deliberately formulated in order to react upon historical fact. Thirdly, in instituting the Council of the Areopagus and dwelling upon the importance of its constitutional function , Aeschylus seems to have gone out of his way to pass judgement of some sort on the recent reforms of Ephialtes and Pericles; the theory that he has also appreciated their foreign policy on the tragic stage is thus relieved of some of the obvious practical objections and made inherently more plausible. (shrink)