987654321 / 123456789(johndcook.com)

613 points by ColinWright 1 year ago | 100 comments

John D. Cook blog post examining why 987654321/123456789 is nearly 8 and whether analogous digit ratios in other bases are close to integers.

Tetrahedral Analog of the Pythagorean Theorem(johndcook.com)

10 points by ibobev 11 months ago | 1 comments

Mathematical minimalism(johndcook.com)

27 points by chmaynard 6 months ago | 1 comments

The Buenos Aires Constant(johndcook.com)

103 points by zdw 1 year ago | 43 comments

Nonlinearity Affects a Pendulum(johndcook.com)

31 points by ibobev 6 months ago | 4 comments

Why Mathematica does not simplify sinh(arccosh(x))(johndcook.com)

141 points by ibobev 7 months ago | 54 comments