W3C home > Mailing lists > Public > www-math@w3.org > July 2014

RE: Tie over infinity

From: George Weilenmann <george.weilenmann@insightsoftware.com>
Date: Mon, 21 Jul 2014 02:20:33 +0000
To: Shervin Afshar <shervinafshar@gmail.com>, "www-math@w3.org" <www-math@w3.org>
Message-ID: <6831C5AB7FFA4047B0D01BD5BC2530B77416AA30@mbx500-u1-lo-1.exch500.msoutlookonline.net>
The only time I have seen them in Context is in some mid 1800’s treatises for the incomplete infinity and in a few documents concerning uncountable infinity from the early 1900’s, I have not seen their usage in any mathematical texts after the 1950’s that I can recall. It would seem their usage fell out of favor. Instead Aleph and Beth Cardinal Numbers, א U+05D0 ב U+05D1 replaced Uncountable Infinities, and (INCOMPLETE INFINITY) U+29DC ⧜ or (PROPORTIONAL TO) U+221D ∝ or (INFINITY NEGATED WITH VERTICAL BAR) U+29DE for incomplete infinity.

George Weilenmann
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From: Shervin Afshar [mailto:shervinafshar@gmail.com]
Sent: Sunday, July 20, 2014 5:49 PM
To: George Weilenmann; www-math@w3.org
Subject: Re: Tie over infinity

Thank you for the information. Do you of any publications that I can see the symbol in context?

↪ Shervin

On Thu, Jul 17, 2014 at 7:02 PM, George Weilenmann <george.weilenmann@insightsoftware.com<mailto:george.weilenmann@insightsoftware.com>> wrote:
Tie over infinity is a variant of the incomplete Infinity, and rarely used to represent big infinity (uncountable infinity)

George Weilenmann
IT Help Desk | CRM Customization | Portal Developer
Office +1 303.800.5027<tel:%2B1%20303.800.5027>| Mobile +1 720.940.0974<tel:%2B1%20720.940.0974>
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From: Shervin Afshar [mailto:shervinafshar@gmail.com]
Sent: Thursday, July 17, 2014 6:26 PM
To: Murray Sargent
Cc: www-math@w3.org; Barbara Beeton
Subject: Re: Tie over infinity<http://www.insightsoftware.com/fans/?utm_source=Employees&utm_medium=Email&utm_content=Fans&utm_campaign=Signature>
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Anyone know how "tie over infinity" ⧝ (29DD) is used in mathematics?

Thanks,
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Received on Monday, 21 July 2014 02:21:02 UTC

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