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Log-space reduction

In computational complexity theory, a log-space reduction is a reduction computable by a deterministic Turing machine using logarithmic space. Conceptually, this means the Turing machine can keep a constant number of pointers into the input, along with a logarithmic number of fixed-size integers. It is possible that such a machine may not have space to…

Logspace reduction, Overview & Logspace computable function

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Logspace computable function

Logspace reduction

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Log-space reduction

Nodes29
Edges28
Triples3
Avg. degree1.93
Density0.068966
Components1

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Log-space reduction

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Log-space reduction → reduction computable by a deterministic Turing machine using logarithmic space

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Important terminology

reductions log-space logspace machine reduction output turing computable displaystyle complexity polynomial-time transducer used space problem problems function many-one nl input

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SubjectPredicateObjectConfidenceSrc
Log-space reductionis areduction computable by a deterministic Turing machine using logarithmic space0.90text
NC may not be closed under Turing reductionsinstance ofother subclasses of P0.80text
and so many-one reductions must be usedinstance ofother subclasses of P0.80text

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