(JAN of Łańcut), Algorithmus linealis cum pulchris conditionibus duarum regularum de tri,

Algorithmus linealis cum pulchris conditionibus duarum regularum de tri,

vna de integris, altera vero de fractis, regulisque socialibus, et semper exemplis idoneis adiunctis. Accesserunt priori aeditioni regulae quaedam utilissimae. Nunc denuo reuisus et correctus. Cracoviae 1556. apud viduam Hieronymi Schar(ffenberg) Anno ab orbe redempto. MDLVI. (15.5 x 10 cm), pp. [28], woodcut diagrams in the text, (woodcut printer's vignette at end): in a bordered frame two etiquettes hold a shield, on which the letters: I. S. H. (Jerome Scharffenberg) entwined, cover broch. 19th/20th c.
(Estr. T. 21). On the reverse of the title, preface: ad lectorem. The first edition was published in 1513 in the printing house of Flor. Ungler. Jan of Lańcut was probably from Landshut in Bavaria; he resided in Cracow in 1499-1501 and from 1513 probably until his death in 1516, a famous Polish mathematician, professor at the Cracow academy, author of "Arithmetic" (1513), which served as a textbook for a long time. Traces of dampstain, stains and woodworm, non-fraying of page edges, 1 card missing: "D1". b . rare .