Encyclopedia > Polynomial-time Turing reduction

  Article Content

Polynomial-time Turing reduction

In computational complexity theory a polynomial-time Turing reduction or Cook reduction of a decision problem L to a decision problem M is an oracle machine that has an oracle for M and can decide L in polynomial time.

If such a reduction exists, then every algorithm for M immediately yields an algorithm for L, with only a modest (i.e. polynomial) slow-down.

The intuitive notion of reducibility can be formalized in different ways: see polynomial-time many-one reduction and logarithmic-space many-one reduction[?].



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
242

... 190s 200s 210s 220s 230s - 240s - 250s 260s 270s 280s 290s Years: 237 238 239 240 241 - 242 - 243 244 245 246 247 Events Patriarch Titus[?] succeeds ...

 
 
 
This page was created in 32.6 ms