## / infinity symbol

This topic has been archived, and won't accept reply postings.
without wishing to encourage all the mathsy sciency techy folk on here into an argument about such things, please can someone tell me the correct name for the infinity symbol as I appear to have forgotten it.

many thanks.

I believe it's a 'drunkeneight'.

Lemniscate?

It's a lemniscate.

Beat me to it!
In reply to KeithW and ebygomm:

according to Dictionary.com that just refers to any figure-of-eight symbol, not specifically the infinity symbol, for which I'm sure there's a special name...

http://dictionary.reference.com/browse/lemniscate

ooo right that makes more sense.

thanks all.

Well at least I've learnt something today. :O

http://www.wikipedia.org/wiki/Infinity#Infinity_symbol
and
http://en.wikipedia.org/wiki/Lemniscate from which:

In algebraic geometry, the word lemniscate refers to any of several figure-eight or ‡ shaped curves, of which the best known is the Lemniscate of Bernoulli. It is also sometimes used to refer to the ‡ symbol used in mathematics as a symbol for infinity.
In reply to CJD: The opticians I know refer to it as the infinity symbol. The database designers I know refer to is as the infinity symbol. The photographers I know.... oh all right then.
> without wishing to encourage all the mathsy sciency techy folk on here into an argument about such things, please can someone tell me the correct name for the infinity symbol as I appear to have forgotten it.
>
> many thanks.

The same name "bolduc" as the greek one meaning "ruban" comes from the Netherlands, the city of 's Hertogenbosh: Bois-le-Duc in french, where was produced this kind of ribbon, used in the sweetshops! un huit couché ...
The lemniscate constant, 1.311028777... results from the square of the GAMMA(1/4) divided by four times the square root of two Pi.
I love the lemniscate curve.