Revision as of 16:40, 22 March 2004 edit Robbot (talk \| contribs) 94,607 edits m Andre Engels - Robot-assisted disambiguation: Function ← Previous edit		Revision as of 13:56, 4 May 2004 edit undo Henrygb (talk \| contribs) 12,381 edits pi(x) is not a multiplicative function: pi(6)=3 != pi(2)*pi(3)=2. Next edit →
Line 19: :π(''x'') ~ Li(''x'') where π(''x'') denotes ~~a [[multiplicative function]] -~~ the number of primes smaller than or equal to ''x'', and Li(''x'') is the [[offset logarithmic integral]] function, related to li(''x'') by Li(''x'') = li(''x'') - li(2). The offset logarithmic integral gives a slightly better estimate to the π function than li(''x''). The function li(''x'') is related to the ''[[exponential integral]]'' Ei(''x'') via the equation

Logarithmic integral function: Difference between revisions