Historical Uses of Portable Astronomical Instruments

Definitions and mathematical statement

The supplied record concerns a historical and archaeological inquiry about portable astronomical instruments in late-medieval England. Its original question is:

What were portable astronomical instruments used for in late-medieval England, and how much were they actually carried around?

The inquiry asks for evidence concerning both the instruments' actual uses and the extent of their actual transport. The description "portable" does not establish that the instruments were routinely transported.

No precise mathematical statement can be recovered from the supplied record. It specifies neither mathematical objects nor hypotheses, quantifiers, or a conclusion suitable for a theorem or conjecture. It also leaves unspecified the chronological boundaries of "late-medieval," the class of instruments included, and a measure of how much they were carried around. These omissions must remain unresolved rather than be replaced by invented definitions.

The supplied source-verification field explicitly classifies the question as historical and archaeological rather than mathematical, marks its statement status as unrecoverable, and states that no separate clean statement is promoted. The original question is retained for provenance. The registry's open label and its assessment that the historical evidence does not settle either use or actual mobility are supplied curation claims, not independently verified mathematical facts.

Short English statement

The source asks what portable astronomical instruments were actually used for in late-medieval England and how extensively they were transported. It supplies a historical research question, without enough definitions or structure to formulate a mathematical conjecture. This statement-only draft preserves that limitation and requires human review.

Sources

• Supplied local UnsolvedMath registry record, permanent ID 30003684, title Historical Uses of Portable Astronomical Instruments, source problem code catalogue entry, in the Oberwolfach Reports Open Problems collection. No individual proposer is identified; the supplied proposed year is 2017.
• Supplied source citation: Mathematical Instruments between Material Artifacts and Ideal Machines: Their Scientific and Social Role before 1950 (2018), Oberwolfach Reports, pp. 3471--3560, DOI 10.4171/owr/2017/58. Supplied source URL and literature-source link, labeled "Oberwolfach report": https://doi.org/10.4171/owr/2017/58. The background describes Oberwolfach Reports as documenting mathematical workshops and their open-problem discussions.
• Literature assessment checked at 2026-08-21: the supplied curation labels the inquiry open and states that historical evidence does not settle either the uses or the actual mobility of late-medieval English portable astronomical instruments. This is supplied dated curation derived from the OWR record, not an independently verified assessment. The background expressly calls for independent verification of time-sensitive status and cited claims.
• The supplied statement-verification note identifies the inquiry as historical and archaeological rather than mathematical, retains the original record for public provenance, and promotes no separate clean statement. The report has not been independently consulted for this draft.