Minutes: MathML meeting 7 Dec, 2023

 Attendees:

   - Neil Soiffer
   - Louis Maher
   - Moritz Schubotz
   - Bruce Miller
   - Murray Sargent
   - Paul Libbrecht

<https://sandbox.cryptpad.info/code/inner.html?ver=5.5.0-g#cp-md-0-regrets>
Regrets

   - David Carlisle
   - Deyan Ginev
   - Cary Supalo
   - David Farmer

<https://sandbox.cryptpad.info/code/inner.html?ver=5.5.0-g#cp-md-0-agenda>
Agenda
<https://sandbox.cryptpad.info/code/inner.html?ver=5.5.0-g#cp-md-0-1-announcements-updates-progress-reports>1.
Announcements/Updates/Progress reports

MuS was having trouble aligning equations using align-mark and align-group.
Align-mark and Align-group are not supported by MathJAX or Chrome. He tried
to line up equations using cells in his table.

NS: There is a line-breaking polyfill, that I have, that will allow you to
say "I want to align on the equals signs' so you can just force the line
breaks to do that, but it's not part of core.

NS: says that the browser implementations do not support line-breaking.

MuS says that lining things up using cells has problems when you encounter
math symbols like plus signs.

NS: You can use mphantoms to line things up.

NS: You can use form = infix to effect spacing.

NS: You can put a property on the table that says, 'system of equations'.
<https://sandbox.cryptpad.info/code/inner.html?ver=5.5.0-g#cp-md-0-2-a-href-https-w3c-github-io-mathml-docs-intent-core-concepts-core-concept-list-updates-a->2.
Core concept list updates
<https://w3c.github.io/mathml-docs/intent-core-concepts/>
<https://sandbox.cryptpad.info/code/inner.html?ver=5.5.0-g#cp-md-0-i-a-href-https-docs-google-com-spreadsheets-d-1eswou1k5nxbdlpvqapdoa9h-s8lg_qjn8fjh64g9izq-edit-gid-1358098730-deyan-39-s-original-spreadsheet-a->i.
Deyan's original spreadsheet
<https://docs.google.com/spreadsheets/d/1EsWou1K5nxBdLPvQapdoA9h-s8lg_qjn8fJH64g9izQ/edit#gid=1358098730>

Concepts To Be Added

   - length (for length of a line segment)
   - volume
   - unit-vector
   -
      - MoS: Unit vector is often used in physics
      https://en.wikipedia.org/wiki/Unit_vector
   - identity-matrix
   - inverse
   - adjoint
   -
      - MS: https://en.wikipedia.org/wiki/Adjugate_matrix describes adjoint
      or adjugate. Nobody seems familar with the word "adjugate".
   - intersection
   - union
   - set-difference
   - complement
   - empty-set
   - conditional-probability
   - permutation (agreed to use "pochhammer" to be clear; also called
   shifted factorial.)

Concepts Requiring Further Consideration

   - dimensional-by
   - matrix-order
   - number-set (add more to the property description)

Ended on line 180.

NS: The entries in last part of the list are covered under properties
(units, chemistry), so there is not much left. I hope to go through the
remaining items before the next meeting so we can focus on questionable
items. Perhaps we will be able to start on other lists.