blacksquare symbol

• From: David Allouche <david@allouche.net>
• Date: Wed, 29 Oct 2003 21:50:12 +0100
• To: www-math@w3.org
• Message-ID: <20031029205012.GD15204@ws24047.math.univ-rennes1.fr>

Still working on my conversion tables...

I noticed:

  -- ▪ is U+25AA.

  -- The comment for &squf (which is also U+25AA) contains
     "/blacksquare" (which I suppose means it is equivalent
     to LaTeX \blacksquare).

  -- The TeX font glyph TeXmacs use for its symbol <blacksquare> is
     translated by Omega to U+25AA.

However:

  -- &FilledVerySmallSquare; is U+25AA.

  -- The TeX font glyph for \blacksquare is clearly a _black (big)
     square_ and looks like it should be U+25A0.

  -- The TeX glyph which reads as a white square of the same size is
     mapped by Omega to U+25A1 and not U+25AB. This is not consistent.

  -- Looking at the Unicode chart, I can see that U+25AA is indeed a
     very small centered black square, while U+25A0 is a big black
     square.

  -- The MathML DTD has no entity for U+25A0.

Everyone here seems to be wrong. The various entities for &#25AA;
should instead be &#25A0. Is this just a mistake in MathML which
has found its way into Omega, or is there a deep rationale behind it?

-- 
                                                            -- ddaa

Received on Wednesday, 29 October 2003 15:50:47 UTC