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