What is "fredholm"

Fredholm is a small lunar impact crater that is located in the rugged ground to the west of the Mare Crisium. It lies midway between the prominent craters Macrobius to the north and Proclus almost due south.

This is a circular, symmetrical formation with a bowl-shaped interior. The inner walls gradually slope down towards the small, central floor, which is less than one quarter the total diameter of the crater. Neatly attached to the northern rim is the smaller Macrobius E. Fredholm was also a satellite crater of Macrobius, being designated Macrobius D before being given a name by the IAU.

Fredholm is a Swedish surname. Notable people with the surname include:

• Erik Ivar Fredholm (1866–1927), Swedish mathematician
  • Fredholm alternative, in mathematics
  • Fredholm determinant, in mathematics
  • Fredholm integral equation, in mathematics
  • Fredholm kernel, in mathematics
  • Fredholm module, In noncommutative geometry
  • Fredholm number, in number theory, apparently not in fact studied by Fredholm
  • Fredholm operator, in mathematics
  • Fredholm's theorem, in mathematics
  • Analytic Fredholm theorem, in mathematics
  • Fredholm theory, in mathematics
  • Fredholm (crater), a small lunar impact crater
  • 21659 Fredholm (1999 PR3), main-belt asteroid discovered on 1999 by P. G. Comba

• (1830–1891), Swedish industrialist

• Gert Fredholm (born 1941), Danish film director and screenwriter

• (born 1978), Swedish footballer