Special Values
The function li(x) has a single positive zero; it occurs at x ≈ 1.45136 92348 ...; this number is known as the Ramanujan–Soldner constant.
li(2) ≈ 1.045163 780117 492784 844588 889194 613136 522615 578151…
This is where is the incomplete gamma function. It must be understood as the Cauchy principal value of the function.
Read more about this topic: Logarithmic Integral Function
Famous quotes containing the words special and/or values:
“In England and America a beard usually means that its owner would rather be considered venerable than virile; on the continent of Europe it often means that its owner makes a special claim to virility.”
—Rebecca West (18921983)
“Nothing is so threatening to conventional values as a man who does not want to work or does not want to work at a challenging job, and most people are disturbed if a man in a well- paying job indicates ambivalence or dislike toward it.”
—Alice S. Rossi (b. 1922)