Mandelbrot
biographical name
Man·del·brot ˈman-dəl-ˌbrōt 
Benoit B. 1924–2010 American (Polish-born) mathematician and scientist
- a dibs
- a difference of opinion
- a dime a dozen
- a dog's breakfast
- a dog's life
- a dose of someone's own medicine
- a drop in the ocean
- a due
- A end
- a face like thunder
- a fair crack of the whip
- a fair hearing
- a fair shake
- a far cry from
- a far sight
- a fat lot of good
- a fate worse than death
- a feast for the eyes
- a feather in one's cap
- a feather in someone's cap
- a feeling of
- a few bob
- a fight for one's life
- a figment of one's imagination
- a fool and his money are soon parted