Minutes: MathML intent meeting 4 March, 2020

Attendees:

Neil Soiffer

David Carlisle

Deyan Ginev

David Farmer

Murray Sargent

Louis Maher

Patrick Ion

Bruce Miller

Moritz Schubotz

Regrets: Louis Maher, Sam Dooley



There are access problems with the recording. If that gets resolved, I’ll
send the link.


 Agenda:

1.  Announcements/updates

NS: Upto ~34 votes


2.  Continue discussion on Deyan's efforts in the new “Level 1 Ed” sheet in the
notation spreadsheet.
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdocs.google.com%2Fspreadsheets%2Fd%2F1EsWou1K5nxBdLPvQapdoA9h-s8lg_qjn8fJH64g9izQ%2Fedit%23gid%3D1358098730&data=04%7C01%7C%7Cb56f1ad5b9294420eefb08d8d90bf86a%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637497992718511772%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=t7WIIimd3F5PxsymJvTQxwHhIx17ZxN9SoMbx8RvPaY%3D&reserved=0>


Went through another 30 videos on Algebra 2, although some are rather
generic.

Added some “compound names” -- scripted variables. Markup was never
pronounced.

Indexed arguments: s_n is pronounced “s sub n”, but it wasn’t really an
index. It was the sum up to the nth term.

Logs and natural logs sometimes say “base”

Aligned equations (line 1, line 2)

Trig functions. Mostly “inverse tangent”. Once or twice “arc tangent”.
Mostly said the full word, not “cos”

Sometimes “not equals” was “x can not be 0”

Limits are spoken in different ways by the same speaker. Used superscripts
with +/- to indicate limits from above/below.

Got to geometry, which includes sets.

AB with a line above is the segment AB. Without the line above is the
length of the line segment.

SAS as an upper limit with => pronounced “by”. Also “def’ is used although
there is a Unicode char for that. “Qualified operator”

DF: it’s important to know how frequently something is used.

~ is pronounced differently in geometry (“is similar to”) as opposed to
approximately

[ABC] is area of triangle ABC. Sometimes “area of” but never Area[ABC].

AA is not a measure of a line segment. It is angle-angle postulate.

30-60-90 triangle -- occurs in text, not math

Saw ∠1, ∠2, where the ‘1’ is really a variable. Are they mn’s?

Some discussions of the lack of universality of math notation