Re: math symbol for "is an element of"

From: <type@projectivespace.com>
To: "'mailing list for ConTeXt users'" <ntg-context@ntg.nl>
Subject: Re: math symbol for "is an element of"
Date: Thu, 5 Nov 2020 15:24:18 -0800	[thread overview]
Message-ID: <000c01d6b3ca$c907ddf0$5b1799d0$@projectivespace.com> (raw)
In-Reply-To: <F9B3EC91-CC36-4EAB-9086-CF95227B8730@telia.com>

Thank you, Hans! The links you gave me provide me with another useful tool in my toolbox (which I had not been aware of before).

In this particular case, as Wolfgang pointed out, \in actually does work to get the desired symbol in math mode. But it is good to know how to use text substitutions too.

Thanks,

Sciurus

-----Original Message-----
From: ntg-context <ntg-context-bounces@ntg.nl> On Behalf Of Hans Åberg
Sent: Thursday, November 5, 2020 12:44 PM
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: [NTG-context] math symbol for "is an element of"

> On 5 Nov 2020, at 21:22, type@projectivespace.com wrote:
> 
> Other than typing it directly (or cutting and pasting it), how does one get
> the character ∈ (in case this gets garbled in emailing, this is supposed to
> be the mathematical symbol that looks more or less like an epsilon, and
> which is the mathematical symbol for "is an element of" a set).
…
> This is a very common character in mathematics, so I wanted to ask: what is
> the recommended way to type this character? (I'm hoping to avoid having to
> cut and paste the character into the document every time I want to use it.
> And I don't have a utf enabled keyboard that would allow me to type this
> symbol readily from the keyboard.)

There is no recommended way. One can have it in the input sources. The quickest way to both design and use I have found is text substitutions [1]. For the mathematical styles, TeX and Unicode do it differently, and ConTeXt follows the former unless one uses a command, see [2].

1. https://mailman.ntg.nl/pipermail/ntg-context/2020/099278.html
2. https://mailman.ntg.nl/pipermail/ntg-context/2020/099880.html

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