reducible class
21Circuits over sets of natural numbers — Circuits over natural numbers is a mathematical model used in studying computational complexity theory. It is a special case of circuit, the object is a labeled directed acyclic graph the nodes of which evaluate to sets of natural numbers, the… …
22Whewell’s philosophy of science and ethics — Struan Jacobs ON SCIENCE Introduction Among the most prodigious of English minds of the nineteenth century, William Whewell (1794–1866) was at various times, and among other things, philosopher, intellectual historian, scientist, educationist,… …
23SL (complexity) — In computational complexity theory, SL (Symmetric Logspace or Sym L) is the complexity class of problems log space reducible to USTCON ( undirected s t connectivity ), which is the problem of determining whether there exists a path between two… …
24P = NP problem — The relationship between the complexity classes P and NP is an unsolved question in theoretical computer science. It is considered to be the most important problem in the field – the Clay Mathematics Institute has offered a $1 million US prize… …
25Reduction (complexity) — Example of a reduction from a boolean satisfiability problem to a vertex cover problem. Blue vertices form a vertex cover which corresponds to truth values. In computability theory and computational complexity theory, a reduction is a… …
26Nature and Attributes of God — The Nature and Attributes of God † Catholic Encyclopedia ► The Nature and Attributes of God I. As Known Through Natural Reason A. Infinity of God B. Unity or Unicity of God C. Simplicity of God D. Divine Personality… …
27Holonomy — Parallel transport on a sphere depends on the path. Transporting from A → N → B → A yields a vector different from the initial vector. This failure to return to the initial vector is measured by the holonomy of the connection. In differential… …
28Philosophy of mind — A phrenological mapping[1] of the brain. Phrenology was among the first attempts to correlate mental functions with specific parts of the brain. Philosophy of mind is a branch of philosophy that studies the nature of the mind, mental even …
29Space group — In mathematics and geometry, a space group is a symmetry group, usually for three dimensions, that divides space into discrete repeatable domains. In three dimensions, there are 219 unique types, or counted as 230 if chiral copies are considered… …
30History of the Church-Turing thesis — This article is an extension of the history of the Church Turing thesis.The debate and discovery of the meaning of computation and recursion has been long and contentious. This article provides detail of that debate and discovery from Peano s… …
