Zij-i Ulugh Beg · Tables

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This copy lacks its introduction and explanations but preserves the tables.

1500–1599 represents the catalogue’s sixteenth-century copy dating, not the work’s composition period.

This record concerns a particular text section on folios 68v–135v within IO Islamic 1148. The catalogue places the copy in the sixteenth century and states that its introduction and explanations are missing. The visible tables do not therefore permit claiming a certain reconstruction of the absent theory. A missing introduction in this witness also does not establish that the work’s whole tradition lacked explanation. Distinguishing work, manuscript and digital-image units is especially important in composite volumes. Another text sharing a digital file does not automatically supply the explanation belonging to this table section.

Start with column count, row structure and visible headings. Record numeral conventions and possible losses before converting entries into modern digits. If a cell is uncertain, do not silently replace it with a calculated expected value. That expectation is a hypothesis to test, not independent verification of the reading. Two people examining the same page separately can expose disagreements, but the procedure is not automatically academic peer review. Separate the source image, draft reading, interpretation and experimental calculation in the notebook so that another visitor can inspect how a proposed result was reached.

The date range here concerns the copy, while language and foliation come from the catalogue. No new transcription or verified line-by-line translation is claimed. For further work, plan a comparison of a small table passage with another witness, recording the selection reason, image identifiers and units. If a discrepancy cannot be resolved as spelling, copying or calculation, preserve that uncertainty as a finding. Careful reading of an accessible source offers a deeper historical investigation than using its numbers merely as decoration for a modern simulation. It also identifies precisely where further linguistic or mathematical expertise is needed.

Other names / spellings: Zij i Sultani · زيج ألغبيك