Never heard of χ.  Not on my keyboard.  Sounds like I need it.  What is the
U code for it?  Is it U+03a7 or U+03C7?

Thanks.

Blake


On Thu, Jul 31, 2014 at 10:02 PM, Elias Mårtenson <loke...@gmail.com> wrote:

> Right. I was thinking of χ, which apparently is called chi.
>
> Regards,
> Elias
>
>
> On 1 August 2014 10:53, Kacper Gutowski <mwgam...@gmail.com> wrote:
>
>> On 2014-07-31 22:49:06, Peter Teeson wrote:
>> > David used theta as well. Is that also an available symbol?
>> > i.e. a greek letter not otherwise used by the APL language?
>>
>> You're probably refering to ⍬.  This is not a theta.  This symbol
>> is called zilde and it should look like zero with superimposed
>> tilde.  It's not specifically related to lambdas.
>> Zilde stands for a numeric vector of zero length (just like '' is
>> a character vector).  You can write (0⍴0) instead of ⍬.
>>
>>
>> -k
>>
>>
>

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