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L1, L01, L.1, L 1 or L-1 may refer to:

  • L1 distance in mathematics, used in taxicab geometry
  • L1, the space of Lebesgue integrable functions in mathematics
  • L1 family, a protein family of cell adhesion molecules
  • L-1 Identity Solutions, Inc, a US face-recognition corporation
  • L1 (protein), a cell adhesion molecule
  • L-1 visa, a document used to enter the United States for the purpose of work
  • L1, Lagrangian point 1, the most intuitive position for an object to be gravitationally stationary relative to two larger objects (such as a satellite with respect to the Earth and Moon).
  • L1, one of the frequencies used by GPS systems (see GPS frequencies)
  • L1, the common name for the Soviet space effort known formally as Soyuz 7K-L1, designed to launch men from the Earth to circle the Moon without going into lunar orbit.
  • L1 - In reference to Magic: the Gathering, an abbreviation denoting someone is a Level 1 Judge.
  • Bose L1 Portable Systems
Containing L1 





And also :