The #P-complete problems (pronounced "sharp P complete" or "number P complete") form a complexity class in computational complexity theory. The problems...

problems. The most difficult, representative problems of this class are #P-complete. An NP decision problem is often of the form "Are there any solutions...

The #P-completeness of 01-permanent, sometimes known as Valiant's theorem, is a mathematical proof about the permanent of matrices, considered a seminal...

independent sets it contains. This problem is intractable, namely, it is ♯P-complete, already on graphs with maximal degree three. It is further known that...

from one problem to another) used to define the notion of completeness for the complexity class ♯P. These reductions may also be called polynomial many-one...

notation is F♯, C♯, G♯, D♯, A♯, E♯, B♯. Starting with no sharps or flats (C major), adding the first sharp (F♯) indicates G major, adding the next (C♯) indicates...

F♯ A♯ ∞ (pronounced "F-sharp, A-sharp, Infinity") is the debut studio album by Canadian post-rock band Godspeed You! Black Emperor. It was first released...

equal temperament), the sequence is: C, G, D, A, E, B, F♯ (G♭), C♯ (D♭), G♯ (A♭), D♯ (E♭), A♯ (B♭), E♯ (F), C. This order places the most closely related key...

is ♯P-complete and the best known algorithms require an exponential time in the worst case. Boolean satisfiability problem, the canonical NP-complete computational...

automorphism that fixes no vertex) is NP-complete, and the problem of counting such automorphisms is ♯P-complete. While no worst-case polynomial-time algorithms...