Vertical proportionality symbol in physics notes

[KateMonster]

My physics professor used a symbol in his notes that I was unfamiliar with, and so far the closest thing I have found to it is the propto. The only difference is that my prof used it vertically, with the open side up. I'm wondering if this is a different symbol entirely, or if he just tipped it for fun. Any input is greatly appreciated.

[PLAIN]http://imagebin.org/index.php?mode=image&id=86532

The image doesn't appear to be loading, so here's just the link
[PLAIN]http://imagebin.org/index.php?mode=image&id=86532

That's a picture of his symbol and he used it. Thanks in advance!

 

[Delphi51]

The image you posted as only one pixel, so no information in it!

 

[KateMonster]

But the link works right? It does on my screen at least.

 

[ideasrule]

Sure it works, but a one-pixel image isn't very helpful.

 

[KateMonster]

How about this one? http://imagebin.org/86540

If not I'm going to go destroy imagebin.

 

[Delphi51]

That worked. Looks like the Greek letter "gamma".
See http://en.wikipedia.org/wiki/Gamma.
Is it a relativity class? I believe they use gamma for the "Lorentz factor" which you can see at http://en.wikipedia.org/wiki/Special_relativity.
Kind of odd to see it used as an exponent, though.

 

[KateMonster]

The problem is about compressing gas in a cylinder and finding the pressure. I feel like it would be solvable if I just ignore those symbols, but they're probably there for a reason.

 

[ideasrule]

That symbol is the adiabatic index:

http://en.wikipedia.org/wiki/Adiabatic_index

 

[KateMonster]

Thanks for the help guys :)