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MMM – Memos on Math/Music: This site lists memos on music and math by the site owner.

The music will be listed as mp3 files. Those files have a portrait of the composer as an eye-catcher:
e.g., J. S. Bach’s music on periodic instrumentation has the following portrait,

whereas modern interpretation of J.S. Bach’s music has the following portrait.

Many thanks from the site owner to MuseScore https://musescore.com/ without which he can never create mp3 files.
The math will be listed as PDF files. Some of them are typed using conventional word processors, and others are in LaTeX. Those files have “Girl with a Pearl Earring” by Johannes Vermeer as an eye-catcher: see below.

The site owner would like to express his appreciation to his cousin and the spouse (of the cousin) for suggesting that he should set up a site to list his “achievement” so far.
To view the content, click the URL line for each index below.
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Index for the work by J. S. Bach
https://wordpress.com/post/mathmusic52.com/2030
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Index for memo on mathematics
https://wordpress.com/post/mathmusic52.com/2038
Index for the work by D. Scarlatti
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Acyclic models: unfinished notes.

An attempt to make am accessible account on acyclic model theorem.
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Work in progress: Representation of Finite Groups + Algebra for Representation Theory

Representation of Finite Groups:
Algebra for Representation Theory:
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“Basic Homotopy Theory” by M. M. Postnikov, translated by the site owner

For readers’ convenience, here is the original Russian edition.
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“Weak Equivalences and Quasifibrations” by J. P. May : LaTeXed

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“Differential Topology” and “Differential Group Actions” by C. T. C. Wall

These two notes are the precursor of Wall’s textbook –>.Differential Topology (cambridge.org)
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“An Introduction to Topology” by E. C. Zeeman

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Homotopy theory : unfinished notes

Following is the result of the attempt by the site owner to compile an accessible account on algebraic topology. One day, he may come back to this and may finish this.
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K 21 : D. Scarlatti “Sonata in D major”

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K 20 : D. Scarlatti “Sonata in E major”

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K 19 : D. Scarlatti “Sonata in F minor”
