Quick notation question

1. Jul 4, 2012

genericusrnme

I came across this notation which I've never seen before, it looks a little like feynmann slash notation but I don't think this is the same (see attatchment)
It's kind of like 'd slash'
dE = 'd slash' Q + 'd slash' W

Could anyone give me a helping hand?

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2. Jul 4, 2012

kloptok

It looks like you are reading about thermodynamics. The slash signifies that the changes in Q and W are not true differentials. Quoting the Wikipedia article on the First law of thermodynamics which uses a δ rather than the slashed d:

3. Jul 4, 2012

Ah, thanks