Search results
Results From The WOW.Com Content Network
Gödel's second incompleteness theorem also implies that a system F 1 satisfying the technical conditions outlined above cannot prove the consistency of any system F 2 that proves the consistency of F 1. This is because such a system F 1 can prove that if F 2 proves the consistency of F 1, then F 1 is in fact consistent.
The concept of proof is formalized in the field of mathematical logic. [ 12] A formal proof is written in a formal language instead of natural language. A formal proof is a sequence of formulas in a formal language, starting with an assumption, and with each subsequent formula a logical consequence of the preceding ones.
Q.E.D. or QED is an initialism of the Latin phrase quod erat demonstrandum, meaning "that which was to be demonstrated". Literally it states "what was to be shown". [ 1] Traditionally, the abbreviation is placed at the end of mathematical proofs and philosophical arguments in print publications, to indicate that the proof or the argument is ...
A probabilistic generalization of the pigeonhole principle states that if n pigeons are randomly put into m pigeonholes with uniform probability 1/m, then at least one pigeonhole will hold more than one pigeon with probability. where (m)n is the falling factorial m(m − 1) (m − 2)... (m − n + 1). For n = 0 and for n = 1 (and m > 0 ), that ...
Mathematical fallacy. In mathematics, certain kinds of mistaken proof are often exhibited, and sometimes collected, as illustrations of a concept called mathematical fallacy. There is a distinction between a simple mistake and a mathematical fallacy in a proof, in that a mistake in a proof leads to an invalid proof while in the best-known ...
The corpus of documents containing "cats" or "dogs" can be represented by four documents: Document 1: Contains only the word "cats". Document 2: Contains only "dogs". Document 3: Contains both "cats" and "dogs". Document 4: Contains neither "cats" nor "dogs". To evaluate Search A, clearly the search "(cats OR dogs)" will hit on Documents 1, 2 ...
The Rhind Mathematical Papyrus ( RMP; also designated as papyrus British Museum 10057, pBM 10058, and Brooklyn Museum 37.1784Ea-b) is one of the best known examples of ancient Egyptian mathematics. It is one of two well-known mathematical papyri, along with the Moscow Mathematical Papyrus. The Rhind Papyrus is larger than the Moscow ...
Proof by contradiction. In logic, proof by contradiction is a form of proof that establishes the truth or the validity of a proposition, by showing that assuming the proposition to be false leads to a contradiction . Although it is quite freely used in mathematical proofs, not every school of mathematical thought accepts this kind of ...