#### Archived

This topic is now archived and is closed to further replies.

# What does this math symbol mean?

This topic is 5986 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

## Recommended Posts

I am just reading an article by Keith Waters (SIGGRAPH87) about facial animation here: http://www.cc.gatech.edu/dvfx/readings/waters-s87.pdf On page 20 (the 4th page of the pdf file) there is something that starts with x'' and then a strange symbol and the f(K.A.R.x). I guess the dots is multiplications, but what is that strange symbol that looks like the infinity symbol but with the right end cut off? And what does it mean?

##### Share on other sites
I didn't look at the paper, because I'm pretty lazy, but the infinity symbol with the right curve cut off means "proportional to", meaning that the left side is equal to the right side times a constant multiple.

EDIT: For some odd reason, I can't view the paper. gv doesn't seem to like it, but I'm still pretty sure that I'm right on the math symbol.

[edited by - tsuraan on May 29, 2002 11:11:22 AM]

##### Share on other sites
thanks, that makes sense in the context.

##### Share on other sites
One word : it''s a greek alpha

##### Share on other sites
Also used for expressing the significance level you''re testing for in a stats problem (hypothesis testing).

##### Share on other sites
(∀x:X, ∃y:X)
(x in M ∧ y in M) ∧
(x ≤ y)

[edited by - OrangyTang on May 30, 2002 4:23:11 PM]

##### Share on other sites
It seems that they don''t work with IE. In Mozilla they appear correctly.

##### Share on other sites
quote:
Original post by Fruny
As a side note, you can get HTML codes for math symbols (and other) there.

Graham Rhodes
Senior Scientist
Applied Research Associates, Inc.

##### Share on other sites
Methinks that link would make a good addition to the forum FAQ.

1. 1
Rutin
32
2. 2
3. 3
4. 4
5. 5

• 11
• 13
• 91
• 11
• 10
• ### Forum Statistics

• Total Topics
632973
• Total Posts
3009621
• ### Who's Online (See full list)

There are no registered users currently online

×