A word used to express negation, prohibition, denial, or refusal.
The logical operator which reverses the value of the logical expression it operates on. Parentheses are strongly recommended as Not can affect variables directly. Not 0 would evaluate as a logical value ( being zero would be False and not being zero would be evaluated as True). Say a = 0. Thus, 0 is False, Not would then be Not False, which is True. True has the numeric value -1, so the expression would become -1 0, which is False. However,using parentheses, we have Not (a 0) yields Not (0 0) which yeilds Not( False), which yeilds True.Logical operator precedence: Not, And, Or.
A fundamental logical operator that retains only those elements of a set that are not specified. For instance, the NOT of Blue in the American flag is Red and White.
NOT – retrieves documents which EXCLUDE the word after it Example: hypertension NOT weight - articles will contain hypertension but not weight(Be careful when you use NOT because the term you do want may be present in documents that also contain the word you wish to avoid.)
a unary logical operator that produces a true result if its operand is false, and a false result if the operand is true.
negation of a word or group of words; "he does not speak French"; "she is not going"; "they are not friends"; "not many"; "not much"; "not at all"
A Boolean operator that narrows a search by specifying that an entry is to be retrieved if it contains the first keyword but does not include the second.
Logical negation. A 0 becomes a 1 and a 1 becomes a 0.
Boolean operator, excludes any records containing the terms "notted out". Syn.
Boolean operator that narrows a search by excluding terms. For example, swimming not beaches would retrieve information about swimming that does not include the word beaches. See also operators.
Boolean operator NOT is used to exclude words or phrases from a search. Example cats NOT dogs will retrieve records/pages containing cats but excluding those containing dogs. Note that Altavista uses AND NOT Back to the top
When terms are connected by this logical operator, entries that contain a particular term are excluded. May be used to narrow a search or eliminate false hits. Example: Penguins NOT Pittsburgh
The negator operator that inverts the truth value of its subexpression. For example, if X is true, NOT X is false.
A boolean operator that performs a logical conjunction on one expression. The result of the operation is the opposite of the expression. Here is the truth table of the NOT operator: NOT B = Result 0 1 1 0
The Boolean operator NOT is used to exclude words or phrases from a search. Python NOT Monty finds information on the snake but excludes information on the group Monty Python.
Reverse the logic of the flag on the stack. This word acts to change a non-zero value to zero, and a zero to -1. This is a synonym for 0= . NOTE: this is a departure from the '83 standard, which is to perform a 1's-complement operation on the flag. Load JU:MULTISTANDARD if you need the standard NOT . BEGIN MONEY-GONE? NOT WHILE SPEND-MORE REPEAT Related Words: 0= COMP
When composing a search, a query term such as not bananas means that you don't want any documents that contain the word bananas. The NOT option is normally used as part of a larger more complex search. For example apples and not bananas means that you want documents that contains the word apples but not the word bananas. Other related commands are AND and OR. Thus in a database you might find the following: search number of hits apples 157 bananas 292 apples and not bananas 123 Often brackets are used to make the logic clearer: apples and (not bananas)
Operator - eliminates a term from a search. For example insurance not automobile will eliminate books about automobile insurance. See also boolean searching, reject or require term or phrase.
The logical operator having that property which if P is a statement, then the not of P (P) is true if P is false, and the not of P (P) is false if P is true.
a boolean operator that performs a logical negation. For example, NOT (True) = False, NOT (False) = True. This is a convenient way to toggle some value on and off. See and, or, xor, and refer to the TechNote, " Understanding Boolean Operators".
An operation that can be executed on a binary string. It returns the opposite of that string. (NOT 1) = 0, (NOT 0) = 1. Thus, (NOT 0011) = 1100.
The Boolean operator NOT, which WAIS uses to limit the found documents to ones that contain one term but not another.