20090513, 23:01  #1  
Aug 2006
1761_{16} Posts 
Interpreting a paper: ei and erf
From a paper I've been reading:
Quote:
If more context (or the referenced Appendix) is needed I'll post more, but looking those over didn't help me understand. 

20090514, 14:24  #2  
Nov 2003
16444_{8} Posts 
Quote:
definitions of functions of u, but the RHS integrals are with respect to x, thus the RHS's are functions of TWO variables. EI(u) =  INTEGRAL FROM u to infinity of exp(t)/t dt 

20090514, 15:39  #3  
Aug 2006
3^{2}×5×7×19 Posts 
Quote:
The function in the footnote is defined more conventionally. 

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