L2/07-261

Proposal to Change Math Property Assignments for Some Characters

8-aug-2007

Barbara Beeton, Asmus Freytag, and Murray Sargent III

Examining math documents and math publishers’ lists, we have found errors in the math-property assignments for the characters listed in the table below. The “math” column gives whether we think the character should have the math property, the “GC” column lists its current general category, the “TODO” column lists the proposed action, the “Reason” column gives the source for the change and the “Name” column gives the Unicode name. BB stands for Barbara Beeton of the American Mathematical Society (AMS).

 

Unicode

math

GC

TODO

Reason

Name

20E7

N

Mn

Keep as is

BB

COMBINING ANNUITY SYMBOL

20E8

N

Mn

Keep as is

BB

COMBINING TRIPLE UNDERDOT

20E9

N

Mn

Keep as is

BB

COMBINING WIDE BRIDGE ABOVE

20EA

N

Mn

Keep as is

BB

COMBINING LEFTWARDS ARROW OVERLAY

20EB

Y

Mn

+other math

BB

COMBINING LONG DOUBLE SOLIDUS OVERLAY

2195..2199

Y

So

+other math

TeX

ARROW WITH STROKE..RIGHTWARDS ARROW

219C..219E

Y

So

+other math

AMS

LEFTWARDS WAVE ARROW..LEFTWARDS TWO HEADED ARROW

219F..21A1

Y

So

+other math

Commutative diagrams

UPWARDS TWO HEADED ARROW..DOWNWARDS TWO HEADED ARROW

21A2

Y

So

+other math

AMS

LEFTWARDS ARROW WITH TAIL

21A4

Y

So

+other math

TeX St. Mary road font

LEFTWARDS ARROW WITH BAR

21A5

Y

So

+other math

Anal. to 21A4

UPWARDS ARROW FROM BAR

21A7

Y

So

+other math

Anal. to 21A4

DOWNWARDS ARROW FROM BAR

21A9..21AD

Y

So

+other math

TeX/AMS

LEFTWARDS ARROW WITH HOOK..LEFT RIGHT WAVE ARROW

21B0..21B1

Y

So

+other math

TeX

UPWARDS ARROW WITH TIP LEFTWARDS.. UPWARDS ARROW WITH TIP RIGHTWARDS

21B6..21B7

Y

So

+other math

AMS

ANTICLOCKWISE TOP SEMICIRCLE ARROW..CLOCKWISE TOP SEMICIRCLE ARROW

21BC..21BD

Y

So

+other math

TeX

LEFTWARDS HARPOON WITH BARB UPWARDS..LEFTWARDS HARPOON WITH BARB DOWNWARDS

21BE..21BF

Y

So

+other math

AMS

UPWARDS HARPOON WITH BARB RIGHTWARDS..UPWARDS HARPOON WITH BARB LEFTWARDS

21C0..21C1

Y

So

+other math

TeX

RIGHTWARDS HARPOON WITH BARB UPWARDS..RIGHTWARDS HARPOON WITH BARB DOWNWARDS

21C2..21C4

Y

So

+other math

AMS

DOWNWARDS HARPOON WITH BARB RIGHTWARDS..RIGHTWARDS ARROW OVER LEFTWARDS ARROW

21C5

Y

So

+other math

Wolfram

UPWARDS ARROW LEFTWARDS OF DOWNWARDS ARROW

21C6..21CD

Y

So

+other math

AMS

LEFTWARDS ARROW OVER RIGHTWARDS ARROW..LEFTWARDS DOUBLE ARROW WITH STROKE

21D0..21D1

Y

So

+other math

TeX

LEFTWARDS DOUBLE ARROW..UPWARDS DOUBLE ARROW

21D3

Y

So

+other math

TeX

DOWNWARDS DOUBLE ARROW

21D5

Y

So

+other math

TeX

UP DOWN DOUBLE ARROW

21D6..21D9

Y

So

+other math

Commutative diagrams

NORTH WEST DOUBLE ARROW..SOUTH WEST DOUBLE ARROW

21DA..21DB

Y

So

+other math

AMS

LEFTWARDS TRIPLE ARROW..RIGHTWARDS TRIPLE ARROW

21DD

Y

So

+other math

IEEE

RIGHTWARDS SQUIGGLE ARROW

21E4..21E5

Y

So

+other math

Wolfram

LEFTWARDS ARROW TO BAR..RIGHTWARDS ARROW TO BAR

23B4

Y

So

+other math

BB

TOP SQUARE BRACKET

23B5

Y

So

+other math

BB

BOTTOM SQUARE BRACKET

23E2

Y

So

+other math

BB

WHITE TRAPEZIUM

25A0..25A1

Y

So

+other math

TeX/AMS/AIP/…

BLACK SQUARE.. WHITE SQUARE

25AE..25B6

Y

So

+other math

TeX/AMS/AIP/…

BLACK VERTICAL RECTANGLE..WHITE VERTICAL RECTANGLE

25BC..25C0

Y

So

+other math

TeX/AMS/AIP/…

BLACK DOWN-POINTING TRIANGLE..BLACK LEFT-POINTING TRIANGLE

25C6..25C7

Y

So

+other math

TeX/AMS/AIP/…

BLACK DIAMOND.. WHITE DIAMOND

25CA..25CB

Y

So

+other math

TeX/AMS/AIP/…

LOZENGE.. WHITE CIRCLE

25CF..25D3

Y

So

+other math

TeX/AMS/AIP/…

BLACK CIRCLE.. CIRCLE WITH UPPER HALF BLACK

25E2

Y

So

+other math

TeX/AMS/AIP/…

BLACK LOWER RIGHT TRIANGLE

25E4

Y

So

+other math

TeX/AMS/AIP/…

BLACK UPPER LEFT TRIANGLE

25E7..25EC

Y

So

+other math

TeX/AMS/AIP/…

SQUARE WITH LEFT HALF BLACK..WHITE UP-POINTING TRIANGLE WITH DOT

25FB..25FD

Y

So

+other math

TeX/AMS/AIP/…

WHITE MEDIUM SQUARE..WHITE MEDIUM SMALL SQUARE

2605..2606

Y

So

+other math

TeX/AMS/AIP/…

BLACK STAR..WHITE STAR

2640

Y

So

+other math

TeX/AMS/AIP/…

FEMALE SIGN

2642

Y

So

+other math

TeX/AMS/AIP/…

MALE SIGN

2660..2663

Y

So

+other math

TeX/AMS/AIP/…

BLACK SPADE SUIT..BLACK CLUB SUIT

266D..266E

Y

So

+other math

TeX/AMS/AIP/…

FLAT, NATURAL