Math input methods

Hans Aberg haberg-1 at
Thu Jun 5 03:57:13 CDT 2014

On 5 Jun 2014, at 04:50, David Starner <prosfilaes at> wrote:

> On Wed, Jun 4, 2014 at 6:00 AM, Jukka K. Korpela <jkorpela at> wrote:
>> The change is logical in the sense that bold face is a
>> more original notation and double-struck letters as characters imitate the
>> imitation of boldface letters when writing by hand (with a pen or piece of
>> chalk).
> On the other hand, bold face is a minor variation on normal types.
> Double-struck letters are more clearly distinct, which is probably why
> they moved from the chalkboard to printing in the first place. I don't
> see much advantage of ���������� over ℕℂℝℤℚ, especially when
> confusability with NCRZQ comes into play.

The double-struck letters are useful in math, because they free other letter styles for other use. First, only a few were used as for natural, rational, real and complex numbers, but became popular so that all letters, uppercase and lowercase, are now available in Unicode.

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