adj
(mathematics) Abbreviation of positive. [Not negative or neutral.]
adj
(mathematics) Abbreviation of negative. [Not positive nor neutral.]
n
A sign or symbol used to indicate a direction (e.g. →).
adj
(computing) Of data, consisting coded values (e.g. machine code) not interpretable as plain or ASCII text (e.g. source code).
n
(mathematics, informal) "&": The two-lined right-angled symbol used to separate quotient, divisor and dividend in long division and short division
n
(mathematics) Any symbol (in particular ÷, / or : ) used to denote the operation of division.
n
A symbol (=) used in mathematics to indicate that two values are the same, and elsewhere in various other ways, such as (formerly) to separate the signature from the content of a telegram.
n
The symbol =, composed of two parallel horizontal lines.
n
Alternative form of equal sign [A symbol (=) used in mathematics to indicate that two values are the same, and elsewhere in various other ways, such as (formerly) to separate the signature from the content of a telegram.]
n
A constant can't be used on the left-hand side of a fat arrow (=>) because that turns it into a string.
n
The hash or number sign (#).
n
Alternative form of infinity symbol [A lemniscate; the figure ∞ that represents infinity.]
n
(computer science, parsers) A set of production rules which have an identical sequence of symbols between the right arrow (→) and the dot (•).
n
(mathematics) A notation that denotes a number that is 1 if the condition in square brackets is satisfied, and 0 otherwise, i.e. (where P is a true or false statement)
n
(programming) A long integer variable, twice the size of an int, two or four times the size of a short, and half of a long long.
n
(computing, programming) A kind of integer variable, allowing a greater range of possible values than a long.
n
A sentinel value which cannot occur in normal use, typically used as a placeholder (e.g. a fictitious date such as 2000-02-32).
n
(mathematics) The minus sign (−).
n
(arithmetic) The symbol −, used to denote the operation of subtraction or to indicate that a number is negative.
n
(mathematics) the symbol ∓, meaning "minus or plus", used alongside the plus-minus sign to show that a negative value is to be taken where the positive value is indicated by the plus-minus sign, and vice versa (as in (x ± 1) / (x ∓ 2), which means (x + 1) / (x - 2) and (x - 1) / (x + 2)).
n
(mathematics) Any symbol (in particular ×, * or ·) used to denote the operation of multiplication.
n
(computing) A signed magnitude representation of zero in which the sign bit indicates a negative number.
n
(computing theory) A non-terminal symbol in a formal grammar.
n
(computing) The character # used to represent the word number; the hash sign; also called the pound sign in the US
n
A symbol that is not a word and represents a number, such as the Arabic numerals 1, 2, 3 and the Roman numerals I, V, X, L.
n
A sign that serves as an abbreviation of the word number. It comprises a capital letter N with a lowercase letter o, the latter typically superscript and sometimes underlined. Examples of numero signs include No., No, №, and Nº.
n
Alternative spelling of pi-minus [The negative pion, composed of a down quark and an anti-up quark.]
n
(arithmetic) A plus sign: +.
n
(arithmetic) The symbol + used to denote the operation of addition, to indicate that a number is positive, and so on.
n
(mathematics) the symbol ±, meaning "plus or minus", used to indicate the precision of an approximation (as in "The result is 10 ± 0.3", meaning the result is anywhere in the inclusive range from 9.7 to 10.3), or as a convenient shorthand for a quantity with two possible values of opposing sign and identical magnitude (as in "The roots of the equation x² - 4 = 0 are ±2").
n
(computing) A signed magnitude representation of zero in which the sign bit indicates a positive number.
n
Abbreviation of significant figure. [(mathematics) A digit that is meaningful with respect to the precision of a measurement: in other words a digit that is non-zero, followed by a non-zero digit, or (for trailing zeroes) justified by the precision of the derivation or measurement.]
n
(mathematics) The symbol Σ, used to indicate summation of a set or series.
n
(mathematics) Positive or negative polarity, as denoted by the + or - sign.
n
(computing) The bit in the representation of a number indicating whether it is negative or positive; applicable to both twos complement and signed magnitude representations.
n
(mathematics) The signum function.
n
A written representation for numbers consisting of a series of numeric signs whose values, added together, yield the number represented.
n
(mathematics) A tuple specifying the sign of coefficients in any diagonal form of a quadratic form.
n
(mathematics) A function that extracts the sign of a real number x, yielding -1 if x is negative, +1 if x is positive, or 0 if x is zero.
n
(mathematics) The function that determines the sign of a real number, yielding -1 if negative, +1 if positive, or otherwise zero.
adj
(mathematics) Whose forbidden words form a regular language.
n
May be used to represent approximation (mathematics).
n
(arithmetic, informal) A multiplication sign.
n
A lexicographic symbol consisting of three vertically stacked dashes (≡) sometimes used to represent logical equivalence.
n
(arithmetic, obsolete) Any symbol used to group some of the terms in an expression, indicating that that part of the calculation should be done before other parts.
n
(computing) In the APL programming language, the symbol ⍬ (a zero crossed by a tilde), representing an empty numeric vector.
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