Symmetric Turing Machine - Symmetric Log Space Complexity

Symmetric Log Space Complexity

  • SSPACE(S(n)) is the class of the languages accepted by a symmetric Turing machine running in space O(S(n))
  • SL is the class of problems solvable by a nondeterministic Turing machine in logarithmic space, such that
    1. If the answer is 'yes,' one or more computation paths accept.
    2. If the answer is 'no,' all paths reject.
    3. If the machine can make a nondeterministic transition from configuration A to configuration B, then it can also transition from B to A. (This is what 'symmetric' means.)
    4. It was proved that SL = CoSL.

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