559
559
Regula falsi
REGULA FALSI SEU AUGMENTI ET DECREMENTI. [LEIPZIG: MARTIN LANDSBERG, ABOUT 1495]
Estimate
5,0007,000
LOT SOLD. 13,750 GBP
JUMP TO LOT
559
Regula falsi
REGULA FALSI SEU AUGMENTI ET DECREMENTI. [LEIPZIG: MARTIN LANDSBERG, ABOUT 1495]
Estimate
5,0007,000
LOT SOLD. 13,750 GBP
JUMP TO LOT

Details & Cataloguing

The Erwin Tomash Library on the History of Computing

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London

Regula falsi
REGULA FALSI SEU AUGMENTI ET DECREMENTI. [LEIPZIG: MARTIN LANDSBERG, ABOUT 1495]
4to (205 x 148mm.), 20 leaves, A8 B-D6, 33 lines, gothic type, 5-line initial supplied in red, a modern remboitage of old carta rustica, modern folding box, wormholes on title-page repaired, binding slightly worn and repaired
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Provenance

George Frederick Russell Colt (1837-1909) of Gartsherrie (Lanarkshire), inscription at head of first leaf dated 1881; Charles Turner (1886-1973), Turner Collection, Keele University (now lacking bookplate), deaccessioned 1998; Christie's, 22 November 2002, lot 466, where it was bound with other works and in a defective calf binding; Hartung & Hartung, sale, 9 May 2006, lot 374a, Erwin Tomash

Literature

not in Tomash & Williams; ISTC ir00119000; Hill, Turner Collection p.184

Catalogue Note

FIRST EDITION of this short treatise on the false position method (regula falsi), sometimes attributed to Johannes Widmann. "The rule of false position was an Oriental device which we have now replaced with the equation; it was found in schoolbooks in various countries until the second half of the nineteenth century" (Smith, p.18). This is one of several arithmetical works printed by Landsberg around this time (see also lot 511).

ISTC lists 10 copies, including the present one.

The Erwin Tomash Library on the History of Computing

|
London