Three out of two people have trouble with fractions. — Prairie Life
Koch’s estimate is equivalent to the Riemann Hypothesis.

Koch’s estimate is equivalent to the Riemann Hypothesis.

In fact, in 1901 von Koch showed that the Riemann hypothesis is equivalent to

pi(x) = Li(x) + O(x^(1/2)log x)

http://primes.utm.edu/notes/rh.html

Proof Without Words: The Circle (by minutephysics)

Calculating the area of a circle with beads and ruler.

siphotos:

Brian Urlacher sacks Brett Favre during a 2001 Bears-Packers game. Urlacher, the 2000 Defensive Rookie of the Year, 2005 Defensive Player of the Year and eight-time Pro Bowler, retired on Wednesday. (John Biever/SI)
GALLERY: Classic Photos of Brian Urlacher

siphotos:

Brian Urlacher sacks Brett Favre during a 2001 Bears-Packers game. Urlacher, the 2000 Defensive Rookie of the Year, 2005 Defensive Player of the Year and eight-time Pro Bowler, retired on Wednesday. (John Biever/SI)

GALLERY: Classic Photos of Brian Urlacher

millionsmillions:

Presented Without Comment: the newly unveiled logo for the newly enacted College Football Playoff and the new poster for Lars von Trier’s latest film, Nymphomaniac.

millionsmillions:

Presented Without Comment: the newly unveiled logo for the newly enacted College Football Playoff and the new poster for Lars von Trier’s latest film, Nymphomaniac.