- Non-Normal Form
- Mathematics: NNF
Универсальный русско-английский словарь. Академик.ру. 2011.
Универсальный русско-английский словарь. Академик.ру. 2011.
Jordan normal form — In linear algebra, a Jordan normal form (often called Jordan canonical form)[1] of a linear operator on a finite dimensional vector space is an upper triangular matrix of a particular form called Jordan matrix, representing the operator on some… … Wikipedia
Smith normal form — The Smith normal form is a normal form that can be defined for any matrix (not necessarily square) with entries in a principal ideal domain (PID). The Smith normal form of a matrix is diagonal, and can be obtained from the original matrix by… … Wikipedia
Third normal form — The third normal form (3NF) is a normal form used in database normalization. 3NF was originally defined by E.F. CoddCodd, E.F. Further Normalization of the Data Base Relational Model. (Presented at Courant Computer Science Symposia Series 6, Data … Wikipedia
Second normal form — (2NF) is a normal form used in database normalization. 2NF was originally defined by E.F. CoddCodd, E.F. Further Normalization of the Data Base Relational Model. (Presented at Courant Computer Science Symposia Series 6, Data Base Systems, New… … Wikipedia
Frobenius normal form — In linear algebra, the Frobenius normal form, Turner binormal projective form or rational canonical form of a square matrix A is a canonical form for matrices that reflects the structure of the minimal polynomial of A and provides a means of… … Wikipedia
Conjunctive normal form — In Boolean logic, a formula is in conjunctive normal form (CNF) if it is a conjunction of clauses, where a clause is a disjunction of literals. As a normal form, it is useful in automated theorem proving. It is similar to the product of sums form … Wikipedia
Fourth normal form — (4NF) is a normal form used in database normalization. Introduced by Ronald Fagin in 1977, 4NF is the next level of normalization after Boyce Codd normal form (BCNF). Whereas the second, third, and Boyce Codd normal forms are concerned with… … Wikipedia
Greibach normal form — In computer science, to say that a context free grammar is in Greibach normal form (GNF) means that all production rules are of the form::A o alpha X or:S o lambdawhere A is a nonterminal symbol, α is a terminal symbol, X is a (possibly empty)… … Wikipedia
second normal form — noun A stage in the normalization of a relational database in which it is in first normal form and every non key attribute is dependent upon the entire primary key. See Also: first normal form … Wiktionary
third normal form — noun A stage in the normalization of a relational database in which a database is in second normal form and all non key attributes are mutually independent (no transient dependencies.) See Also … Wiktionary
Hermite normal form — In linear algebra, the Hermite normal form is a special form of reduced echelon form over the integers mathbb{Z}. Specifically, a matrix M over mathbb{Z} is said to be in Hermite normal form (often abbreviated HNF) if* It is upper triangular *… … Wikipedia