Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1329-4199-2 |
Объём: | 80 страниц |
Масса: | 141 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
High Quality Content by WIKIPEDIA articles! In computability theory and computational complexity theory, a reduction is a transformation of one problem into another problem. Depending on the transformation used this can be used to define complexity classes on a set of problems. Intuitively, problem A is reducible to problem B if solutions to B exist and give solutions to A whenever A has solutions. Thus, solving A cannot be harder than solving B. We write A ?m B, usually with a subscript on the ? to indicate the type of reduction being used (m : mapping reduction,p : polynomial reduction).
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