supposed physician, Hupatos. It was, however, a professorial title in use at the university in
Constantinople (from the 11th c. onward); it may also be an adjective expressing the distinct
quality of the author whose name has been lost in the MS tradition. The hupatos (to ̄n philos-
opho ̄n) Io ̄anne ̄s Pediasimos (fl. ca 1250), writer of a medical work on obstetrics, might very
well be our author, particularly because all the MSS of the work are recent. This lexicon is
attributed to H in some MSS (Diels 1905: 1.43).
Diels 2 (1907) 50; RE 9.1 (1914) 251 (#6), H. Gossen; F. Fuchs, Die höheren Schulen von Konstantinople im
Mittelalter (1926) 50–54; G. Björck, “Remarques sur trois documents médicaux de la Bibliothèque
universitaire de Leyde,” Mnemosyne 3 (1938) 139–150 at 141–145; C.N. Constantinides, Higher educa-
tion in Byzantium in the thirteenth and early fourteenth centuries (1204–ca. 1310) (1982) 113–132.
Alain Touwaide
Hupsikle ̄s of Alexandria (150 – (^100) BCE)
Mathematician and astronomer, later than A P and roughly con-
temporary with H. Hupsikle ̄s is perhaps best known as the author of a treatise
that survives as Book 14 of E’s Elements. This treatise, which concerns the ratio of a
regular dodecahedron and icosahedron inscribed in the same sphere, is addressed to
P B. His other surviving work, the Anaphorikos, is remarkable for its
introduction of the division of the circle into 360 degrees of arc and of the day into 360
degrees of time, as well as for its quantitative and arithmetical approach to a problem that
is treated qualitatively and geometrically in Euclid’s Phainomena. This treatise addresses the
question of the time-intervals required for the individual zodiacal signs (that is, the 30 ̊-
segments of the ecliptic named after the zodiacal constellations) to rise at a given latitude
(Alexandria), and uses an arithmetical scheme for computing such rising-times that is known
to be Babylonian in origin to answer it. (Some mistakenly infer that Hupsikle ̄s’ use of such a
scheme dates him before Hipparkhos.) D (De polyg. num.) attributes a definition
of polygonal number to Hupsikle ̄s, which some speculate belonged to a treatise on poly-
gonal numbers that has been lost. A T indicates that Hupsikle ̄s also wrote
a treatise (not extant) on the harmony of the spheres.
Ed.: V. De Falco, M. Krause, and O. Neugebauer, Hypsikles: Die Aufgangszeiten der Gestirne (1966).
Maass (1898) 43; Heath (1921) 1.419–421; Fraser (1972) 2.612, n.381; Neugebauer (1975) 712–733.
Alan C. Bowen
Hupsikrate ̄s of Amisos (30 – 10 BCE)
Wrote a geographical work cited by S, describing the Crimean region (7.4.6), the
Amazons of the Caucasus (11.5.1), and the western “Ethiopians” (17.3.5). He attained an
age of 92, and also wrote history and grammar.
FGrHist 190.
PTK
Huriadas (400 – 300 BCE)
Listed by T (Sweat 17) with A D on disorders related to
sweat: uncertain whether a dietician like Antiphane ̄s or perhaps an athlete or trainer. (The
HURIADAS