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bib30313 (22 / November / 2024)

Darrera modificació: 2021-03-22
Bases de dades: Sciència.cat

Samsó, Julio, "Astrología matemática en el Llibre de les nativitats de Bartomeu de Tresbens", dins: Alberni, Anna - Cifuentes, Lluís - Santanach, Joan - Soler, Albert (eds.), «Qui fruit ne sap collir»: homenatge a Lola Badia, Barcelona, Universitat de Barcelona - Barcino (Filologia UB), 2021, vol. 2, pp. 237-254.

Resum
This is an attempt to analyse the mathematical techniques used by Bartomeu de Tresbens in the Llibre de les nativitats. The book offers no information about his procedure for dividing the houses of the horoscope, but it explains how to trace a planet or a significant point of the ecliptic (tasyīr / “atazir”) in order to determine the amount of time until a particular event will take place. There is also a complete explanation of the astrological technique of casting the rays and, in both cases (tasyīr and projection of rays), Tresbens gives numerical examples that allow us to conject that he is using the tables of oblique ascensions for the beginning of the fifth climate preserved in the Toledan Tables. Finally, the author gives some details about the nativity horoscope of his son and this paper tries to date the event which, probably, took place in March 1364. As Tresbens states that he was forty-seven years old when his son was born, I suggest that he was probably born in 1317.
Matèries
Astronomia i astrologia
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Català
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The small images on the decorative ribbon correspond, from left to right, to the following documents: 1. James II orders the settlement of neighborhood disputes over an estate of the royal doctor Arnau de Vilanova in the city of Valencia. 1298 (ACA); 2. Contract between Guglielmo Neri de Santo Martino, a surgeon from Pisa, and the physician-surgeon from Majorca Pere Saflor, bachelor of medicine, to practise medicine and surgery under the latter’s direction, 1356 (ACM); 3. Valuation of the workshop of Guillem Metge, an apothecary from Barcelona, made by the apothecaries Miquel Tosell, Berenguer Duran and Vicenç Bonanat, for its sale to Llorenç Bassa, a fellow apothecary, 1364 (AHPB); 4. Peter III the Ceremonious regularizes the legal situation of Esteró, a Jewish female doctor from Vilafranca del Penedès, granting her an extraordinary license to practice medicine. 1384 (ACA); 5. Power of attorney of Margarida de Tornerons, a doctor in Prats de Molló and Vic, in order to recover the goods withheld from her by a third party in Vic, 1401 (ABEV); 6. Doctorate and teaching license of Narcís Solà, bachelor of medicine, issued by Bernat de Casaldòvol, doctor of medicine and chancellor of the Faculty of Medicine in Barcelona, 1526 (AHCB); and 7. Partnership between Joan Llunes and Joan Francesc Llunes, father and son, and Lluís Gual, the former’s son-in-law, surgeons of Caldes de Montbui, in order to practise the profession, 1579 (AHCB).