Why would the U.S. Government imprison so many whistleblowers, and decide not to prosecute any torturer, if it aspires to be a democratic country?
[math] f(x) [/math] is a real function such that for every [math] a > 0 [/math] is [math] \lim_{n \to \infty} f(an) = 0[/math]. Does there necessarily exist [math] \lim_{x \to \infty} f(x) [/math]?