Andocidis Orationes edidit Iustus Hermann Lipsius; pp. xxxii, 67. B. Tauchnitz, Leipzig, 1888. M. 1. 20. Andocidis de Mysteriis et de Reditu; edited by E. C. Marchant, B.A., late scholar of Peter house, Cambridge; Assistant Master at St. Paul's School. Rivingtons, London, 1889. 5s.
Khutoretskii's Theorem states that the Rogers semilattice of any family of c.e. sets has either at most one or infinitely many elements. A lemma in the inductive step of the proof shows that no Rogers semilattice can be partitioned into a principal ideal and a principal filter. We show that such a partitioning is possible for some family of d.c.e. sets. In fact, we construct a family of c.e. sets which, when viewed as a family of d.c.e. sets, has (up (...) to equivalence) exactly two computable Friedberg numberings ¼ and ν, and ¼ reduces to any computable numbering not equivalent to ν. The question of whether the full statement of Khutoretskii's Theorem fails for families of d.c.e. sets remains open. (shrink)
Se analiza la presencia intelectual de Ricardo Eduardo Latcham, ingeniero inglés, que llegado a Chile dio un mayor impulso al estudio tanto de la prehistoria latinoamericana como de la arqueología chilena, en los ámbitos del hábitat araucano y de las culturas del norte, en especial la atacameña. En este sentido, sus investigaciones prosiguieron a las de Uhle y posibilitaron integrar a los pueblos originarios del norte chileno al panorama de la prehistoria nacional. Latcham se adentró en registrar las conductas de (...) la sociedad chilena, tanto culta como popular, de fines del siglo XIX, legando agudas anotaciones etnográficas juntamente con una labor de tenaz divulgador de los progresos de la antropología europea, convirtiéndose en un corresponsal de las revistas británicas de la disciplina. Sus obras mayores las pudo difundir en el marco de sus actividades en el Museo de Historia Natural y en la Universidad de Chile. The intellectual presence of Ricardo E. Latcham, an English engineer whose arrival in Chile gave greater impulse to the study of Latin American pre-history and Chilean archaeology regarding araucano habitat and northern cultures, particularly the atacameno culture, is analyzed. His studies continued those of Uhle’s and made it possible to integrate the originary peoples of northern Chile to the panorama of the national pre-history. Latcham recorded the behaviors of both educated and popular Chilean society at the end of the 19th century, producing deep ethnographic records. He also conducted an enthusiastic dissemination of the progress made by European anthropology, becoming a correspondent of the British journals of this discipline. He disseminated his major works while working for the Museum of Natural History and the University of Chile. (shrink)
In 1924 Edmund Clifton Stoner , a 24-year-old research student at the Cavendish Laboratory, Cambridge, sought a university post in physics. Having previously studied at Cambridge as an undergraduate, Stoner was nearing the end of three years' postgraduate research under Professor Sir Ernest Rutherford's supervision. 1924 was not, however, an auspicious time to seek employment since vacancies in university physics departments were scarce. Rutherford showed a kindly interest in Stoner's career and summoned him to his residence – Newnham Cottage – (...) one Friday afternoon in March. Acknowledging Stoner's diabetes as a major concern, he ‘pointed out that I [Stoner] really wanted a job where I could take things fairly easily… He, of course, is prepared to “back me up” & was really very charming, though not very useful in any definite way.’ Subsequent visits to the Appointments Board proved ‘quite fruitless’. Stoner declined to apply for a post at Armstrong College, Newcastle, and only in mid-July did he hear of two more attractive positions. The first, at Durham University, was advertised in the press. Rutherford, who was ‘Affable – pleased with my work’, advised him to apply. Interviewed together with several other candidates, Stoner was unsuccessful but not greatly disappointed. The other post, at the University of Leeds, was brought to his attention by Rutherford. (shrink)