This library is built in the open.
If you spot an error, have a suggestion, or just want to say hello — we’d love to hear from you.

Codex Latinus A shelfmark designating a Latin manuscript in a library collection; this specific number (14836) identifies the book in the Bavarian State Library.
Rules? original: "Canones"; in this context, "canons" usually refers to sets of instructions or tables used for astronomical and mathematical calculations.
Commentaries? without? struggle? number? original: "hypomnemata sine pygna numerus"; "Hypomnemata" is a Greek-derived word for notes or reminders. The phrase suggests a straightforward or undisputed explanation of number theory.
and? precise? mathematics? of Würzburg?
Commentary on the Arithmetic of Boethius Boethius (c. 480–524 AD) was the foundational authority for medieval mathematics; his work "On Arithmetic" remained the standard textbook for nearly a millennium.
Hermann’s Astrolabe Refers to Hermann of Reichenau (1013–1054), a monk known as "Hermann the Lame," who wrote one of the first Western treatises on the astrolabe—a sophisticated handheld model of the universe used for navigation and timekeeping.
from the school The Geometry of Gerbert Gerbert of Aurillac (c. 946–1003), later Pope Sylvester II, was a brilliant scholar who helped reintroduce advanced geometry and the abacus to Europe.
The Game of Soldiers or Chess original: "Ludus latrunculorum sine scaci." "Latrunculi" was an ancient Roman strategy game of soldiers. This note suggests a variation of the game or a comparison to chess ("scaci"), which was then newly arriving in Europe.
Musical Rules of Würzburg
Geometry : Music
The Measurement of the Lion original: "Mensura leonis"; this likely refers to a specific astronomical calculation concerning the constellation Leo or perhaps a geometric exercise in calculating the proportions of a statue.