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- Newsgroups: comp.text.tex
- Path: sparky!uunet!munnari.oz.au!manuel!csc.canberra.edu.au!shubshub!epm
- From: epm@shubshub.canberra.edu.au (Errol Martin)
- Subject: An upside-down iota logic symbol
- Message-ID: <epm.711930380@shubshub>
- Summary: What do I have to do to get an upside-down iota symbol
- Keywords: logic symbol
- Sender: news@csc.canberra.edu.au
- Organization: Info Sci & Eng, University of Canberra, AUSTRALIA
- Date: 23 Jul 92 22:26:20 GMT
- Lines: 21
-
- I would like to use the 'definite description' operator of
- Whitehead and Russell. It is, effectively, an upside-down
- iota, just as the exists and forall operators are upside-
- down E and A. Examples are in Whitehead and Russell's Principia
- Mathematica, e.g. there are several uses at the bottom of
- p.66 of Vol. I of Principia Mathematica (same pagination as
- the paperback "to *56").
-
- What do I have to do to get this symbol? If it is part of a
- regular font set then I will be embarassed at having asked the
- net, but pleased to get an answer. If I need to use Metafont
- to create such a symbol, has anyone already done this?
-
- Thank you,
-
- Errol Martin
- epm@shubshub.canberra.edu.au
- Faculty of Information Sciences and Engineeering
- PO Box 1 Belconnen ACT 2602 Australia
- Ph: +61 6 201 2153 Fax: +61 6 201 5041
-
-