# The Harmonics presents a mathematical music treatise as elite acoustic theory, not a popular songbook

Date: 150

## The fact

Twentieth-century Harmonics editions print a completed mathematical music text under [Ptolemy](/people/ptolemy)’s name. A specialist acoustic-mathematical book is an elite-access object; the improving row is the public edition itself.

It is one event.

## Context

Not a finding that music was forbidden. A learned harmonic canon is a modest inequality-of-access path.

Ptolemy’s documented role is bounded by other offices and collaborators named in the sources below. Sharing a field with them is not a reason to drop a documented act, and it is not a reason to assign later consequences done in the name after death.

Conventional floruit is the mid-2nd century CE in Roman Alexandria.

Named person as heading of the dated public instrument. Later editors, museums, printers, or offices share publication. Complex where later carriers are the surviving public file.

## Evidence and sources

Toomer, Ptolemy's Almagest — public library copy and Cambridge Companion to Ancient Greek and Roman Science independently describe this instrument.

Official or archival record: Toomer, Ptolemy's Almagest — public library copy (https://archive.org/details/ptolemysalmagest0000ptol; Internet Archive / Princeton University Press reprint).

## Significance

Printed Harmonics are not a 2nd-century conservatory statute.

## What is established and what is not

Established as a dated public record of this instrument.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

The date is the date of this instrument, not a licence to back-date every later harm or benefit.

Established here: a sourced, dated public instrument with a named contribution by Ptolemy.

They are not a public rating.

The driver `social-cohesion` is attached because the mechanism named in Significance follows from this instrument, not because a standing list of welfare headings needed another tick. Ptolemy did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act. A portrait or conventional bust is not this mechanism. Allegation, reconstruction, and established occurrence stay distinct.

## People

- Ptolemy: https://factrail.ai/people/ptolemy

## Drivers

- Social Cohesion: https://factrail.ai/drivers/social-cohesion

## Sources

- https://archive.org/details/ptolemysalmagest0000ptol
- https://doi.org/10.1017/9781316136096

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/pto-harmonics-elite-music