Definition, Betydelse & Synonymer | Engelska ordet NULL

Definition av NULL

1. ogiltig
2. (data) null, värde som indikerar ogiltighet eller saknad
3. (data) null, ett styrtecken

Exempel på hur du använder NULL i en mening

• The meaning of "negligible" depends on the mathematical context; for instance, it can mean finite, countable, or null.
• In mathematical analysis, a null set is a Lebesgue measurable set of real numbers that has measure zero.
• On December 16, 1837, the Texas Senate declared the treaty null and void, and encroachment upon Cherokee lands continued.
• If no value is found, some lookup functions raise an exception, while others return a default value (such as zero, null, or a specific value passed to the constructor).
• The inclusion, though never formally amounting to legal annexation, was condemned internationally and declared "null and void" by the United Nations General Assembly.
• The nullity of a matrix is the dimension of the null space, and is equal to the number of columns in the reduced row echelon form that do not have pivots.
• However, as a nobleman, his marriage to a commoner was unlawful; after his death, the marriage was declared null by the state.
• The mayoral election held on November 7, 2006, was declared null and void after allegations of voter fraud were filed by the losing candidate Walter G.
• Mathematical applications of the SVD include computing the pseudoinverse, matrix approximation, and determining the rank, range, and null space of a matrix.
• To determine whether a result is statistically significant, a researcher calculates a p-value, which is the probability of observing an effect of the same magnitude or more extreme given that the null hypothesis is true.
• Systems whose four-momentum is a null vector (for example, a single photon or many photons moving in exactly the same direction) have zero invariant mass and are referred to as massless.
• Below an equivalent definition will be explained: A world line is either a time-like or a null curve in spacetime.
• Michelson and Morley always found that the speed of light did not vary at all depending on the direction of measurement, or the position of the Earth in its orbit, deducing what we call a "null result" for their speed-of-light experiments.
• In particular, the comparative frequently occurs with independent mechanisms of syntax such as coordination and forms of ellipsis (gapping, pseudogapping, null complement anaphora, stripping, verb phrase ellipsis).
• Annulment is a legal procedure within secular and religious legal systems for declaring a marriage null and void.
• The null hypothesis and the alternative hypothesis are types of conjectures used in statistical tests to make statistical inferences, which are formal methods of reaching conclusions and separating scientific claims from statistical noise.
• The null distribution of the Pearson statistic with j rows and k columns is approximated by the chi-squared distribution with.
• It is a nonparametric test that tests the null hypothesis that the medians of the populations from which two or more samples are drawn are identical.
• Under a frequentist hypothesis testing framework, this is done by calculating a test statistic (such as a t-statistic) for the dataset, which has a known theoretical probability distribution if there is no difference (the so called null hypothesis).
• A null cipher, also known as concealment cipher, is an ancient form of encryption where the plaintext is mixed with a large amount of non-cipher material.

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