John D. Cook johndcook.com

Overtones and Barbershop Quartets

johndcook.com·54w

Equipentatonic scale

johndcook.com·54w

The multiple coupon collector problem

johndcook.com·54w

Morse code and the limits of human perception

johndcook.com·55w·Hacker News

Running the Gregorian calendar backwards

johndcook.com·55w

Fredholm Alternative

johndcook.com·55w

Fredholm index

johndcook.com·55w

Kernel and Cokernel

johndcook.com·55w

Topological Abelian Groups

johndcook.com·55w

Millionth powers

johndcook.com·55w

Mr. Bell and Bell numbers

johndcook.com·55w

How many ways can you triangulate a regular polygon?

johndcook.com·56w

1000 most common words

johndcook.com·56w

Miscellaneous mathematical symbols

johndcook.com·56w·Hacker News

Erdős-Mordell triangle theorem

johndcook.com·56w

Logarithmic sawtooth

johndcook.com·56w

When Benford’s law is exact

johndcook.com·56w

Lots of flat sides

johndcook.com·56w

Top 100 radio

johndcook.com·57w

Estimating satellite altitude from speed

johndcook.com·57w

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