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Topics referred to by the same term
Null ideal may refer to: The ideal of null sets in measure theory An ideal that is a pseudo-ring of square zero in ring theory This disambiguation page
Null_ideal
Measurable set whose measure is zero
the null sets of ( X , Σ , μ ) {\displaystyle (X,\Sigma ,\mu )} form a 𝜎-ideal of the 𝜎-algebra Σ {\displaystyle \Sigma } . Accordingly, null sets
Null_set
Probability distribution of the test statistic under the null hypothesis
the null distribution is the probability distribution of the test statistic when the null hypothesis is true. For example, in an F-test, the null distribution
Null_distribution
A nullor is a theoretical two-port network consisting of a nullator at its input and a norator at its output. Nullors represent an ideal amplifier, having
Nullor
Concepts from statistical hypothesis testing
of a true null hypothesis in statistical hypothesis testing. A type II error, or a false negative, is the incorrect acceptance of a false null hypothesis
Type_I_and_type_II_errors
Non-empty family of sets that is closed under finite unions and subsets
convention that an ideal must be proper by definition. An element of an ideal I {\displaystyle I} is said to be I {\displaystyle I} -null or I {\displaystyle
Ideal_on_a_set
Change in enthalpy from dissolving a substance
attractions between the solute and the solvent. An ideal solution has a null enthalpy of mixing. For a non-ideal solution, it is an excess molar quantity. Dissolution
Enthalpy_change_of_solution
Flat-sided three-dimensional shape
consider ideal points and the points within the space. An ideal polyhedron is the convex hull of a finite set of ideal points. Its faces are ideal polygons
Polyhedron
Mathematics of general relativity
alternative energy conditions in common use: The null energy condition stipulates that for every future-pointing null vector field k → {\displaystyle {\vec {k}}}
Energy_condition
Mathematical set regarded as insignificant
sets form a sigma-ideal. Let X be a measurable space equipped with a measure m, and let a subset of X be negligible if it is m-null. Then the negligible
Negligible_set
Change in enthalpy during the mixture of substances
enthalpy of mixing signifies exothermic mixing. In ideal mixtures, the enthalpy of mixing is null. In non-ideal mixtures, the thermodynamic activity of each
Enthalpy_of_mixing
{\displaystyle \delta } as above, let I {\displaystyle {\mathcal {I}}} be the null ideal (generated by elements a {\displaystyle a} with ⟨ a | a ⟩ = 0 {\displaystyle
Planar_algebra
Generalizations of '"`UNIQ--math-00000046-QINU`"' in algebraic structures
and the multiplicative absorbing element, and whose principal ideal is the smallest ideal. A zero object in a category is both an initial and terminal
Zero_element
Algebraic structure
Semigroup with two elements: there are five that are essentially different. A null semigroup on any nonempty set with a chosen zero, or a left/right zero semigroup
Semigroup
Observed inability to reproduce scientific studies
as follows. Assuming an ideal situation of a test of significance, whereby the probability of incorrectly rejecting the null hypothesis is 5% (i.e. Type
Replication_crisis
Topics referred to by the same term
in the Indian numbering system Nil ideal, a mathematical concept in ring theory Null pointer (sometimes written NULL, nil, or None), used in computer programming
Nil
Design pattern in computer programming
the program's operation if properly and appropriately used. This makes it ideal in use cases where network content is accessed and initialization times
Lazy_loading
Set of integral curves of a vector field
ideal observers in our spacetime. In particular, a timelike geodesic congruence can be interpreted as a family of free-falling test particles. Null congruences
Congruence (general relativity)
Congruence_(general_relativity)
Method to measure temperature quantitatively
fundamental, natural definition of thermodynamic temperature starting with a null point of absolute zero. A scale for thermodynamic temperature is established
Scale_of_temperature
Electronic test equipment that measures inductance, capacitance, and resistance
null, rather than measuring impedance and phase angle. Early commercial LCR bridges used a variety of techniques involving the matching or "nulling"
LCR_meter
Ideal low-pass filter or averaging filter
contains periodic lobes with gradually decreasing height in between the nulls at multiples of f S N {\textstyle {\frac {f_{S}}{N}}} . The first lobe is
Sinc_filter
solving the system, and solving the syzygy problem is the computation of the null space of the matrix of a system of linear equations. The basic algorithm
Linear_equation_over_a_ring
High-gain voltage amplifier with a differential input
negative power rails. Many older designs of operational amplifiers have offset null inputs to allow the offset to be manually adjusted away. Modern precision
Operational_amplifier
Topological structure in number theory
local ring that the prime ideals of this ring are as follows: Height 0: the zero ideal. Height 1: the ideal (p), and the ideals generated by irreducible
Iwasawa_algebra
The product of two nonzero elements is nonzero
or }}b=0.} This property is also known as the rule of zero product, the null factor law, the multiplication property of zero, the nonexistence of nonzero
Zero-product_property
Mathematical model combining space and time
moving at the speed of light is zero. Such an interval is termed lightlike or null. A photon arriving in our eye from a distant star will not have aged, despite
Spacetime
Elementary particle or quantum of light
electric field. This provides a means for precision tests of Coulomb's law. A null result of such an experiment has set a limit of m ≲ 10−14 eV/c2. Sharper
Photon
Natural addition of materials to a landmass
gravity and friction, creating a resistance to motion; this is known as the null point hypothesis. Deposition can also refer to the buildup of sediment from
Deposition_(geology)
Exact statistical hypothesis test
counterfactual) null hypothesis is that all samples come from the same distribution H 0 : F = G {\displaystyle H_{0}:F=G} . Under the null hypothesis, the
Permutation_test
Area of mathematics
the ideal of null sets, denoted n o n ( N ) {\displaystyle non({\mathcal {N}})} . There are many such invariants associated with this and other ideals, e
Set_theory_of_the_real_line
Digital circuit without clock cycles
work Logically determined design in 2005 which used four-valued logic with null and intermediate being the additional values. This architecture is important
Asynchronous_circuit
Lowest possible energy of a quantum system or field
rotational state, but with nuclear mass density, dineutrons are nearly ideal sources of gravitational waves at X-ray and gamma-ray frequencies. The dynamical
Zero-point_energy
Unique ring consisting of one element
divisor. The only ideal in the zero ring is the zero ideal {0}, which is also the unit ideal, equal to the whole ring. This ideal is neither maximal
Zero_ring
Time series statistical test
In statistics, the Dickey–Fuller test tests the null hypothesis that a unit root is present in an autoregressive (AR) time series model. The alternative
Dickey–Fuller_test
Antenna constructions for different applications
might be called a "partial null" or "incomplete null" or "faded null", as compared to a smaller loop's "sharp", complete nulls (no signal at all). The weak
Antenna_types
Algebraic structure with addition and multiplication
Rx is a left ideal, and xR is a right ideal; they are called the principal left ideal and right ideal generated by x. The principal ideal RxR is written
Ring_(mathematics)
Educational plan
students or even students and teachers (Jackson, 1986). Excluded curriculum or null curriculum: topics or perspectives that are excluded from the curriculum
Curriculum
Circuit component performing mathematical integration
because offset may drift over time and temperature, some op amps provide null offset pins, which can be connected to a potentiometer whose wiper connects
Op_amp_integrator
Physical quantity of hot and cold
respect to the entropy at constant volume. Its natural, intrinsic origin or null point is absolute zero at which the entropy of any system is at a minimum
Temperature
Juliane Köhler, Merab Ninidze, Matthias Habich, Sidede Onyulo Drama Won Oscar Null Uhr 12 Bernd Michael Lade Meret Becker, Dieter Landuris [de], Bernd Michael
List of German films of the 2000s
List_of_German_films_of_the_2000s
Device that compares two voltages or currents
since there is no reset period. A null detector identifies when a given value is zero. Comparators are ideal for null detection comparison measurements
Comparator
Electronic component delivering stable electric current regardless of voltage
current in the circuit. An ideal current source generates a current that is independent of the voltage changes across it. An ideal current source is a mathematical
Current_source
Topics referred to by the same term
measure, a measure space where every subset of every null set is measurable Completion (algebra), at an ideal Completeness (cryptography) Completeness (statistics)
Completeness
Instrument to measure electric current
kinds of electric quantities into pointer movements make the galvanometer ideal for turning the output of other sensors that output electricity (in some
Galvanometer
Function which measures the "size" of elements in a field or integral domain
can also define null sequences as sequences (an) of elements of D such that |an| converges to zero. Null sequences are a prime ideal in the ring of Cauchy
Absolute_value_(algebra)
Opera house in Vienna, Austria
1869 following plans by August Sicard von Sicardsburg and Eduard van der Nüll, and designs by Josef Hlávka. The opera house was inaugurated as the "Vienna
Vienna_State_Opera
Verb that has no determinate subject
pouring with rain. (British English) In some other languages (necessarily null subject languages and typically pro-drop languages), such as Portuguese,
Impersonal_verb
Noetherian if and only if all its left ideals are finitely generated; analogously for right Noetherian rings. null null ring: See rng of square zero. opposite
Glossary_of_ring_theory
Input needed to zero an amplifier output
circuits (IC). This can be reduced to several microvolts if nulled using the IC's offset null pins or using higher-quality or laser-trimmed devices. However
Input_offset_voltage
Set theory concept
invariants for ideals that are closely connected with the structure of the reals, such as the ideal of Lebesgue null sets and the ideal of meagre sets
Cardinal characteristic of the continuum
Cardinal_characteristic_of_the_continuum
Electronic amplifier that converts weak signal into strong signal
line-level input of common power amplifiers A switched capacitor circuit used to null the effects of mismatch offset in most CMOS comparator-based flash analog-to-digital
Preamplifier
Coordinates to capture characteristics of rotating frames of reference
will pretend that the world line of our laser pulse is a null curve (but certainly not a null geodesic!). In the Born line element, let us put d s = d
Born_coordinates
Optical system with resolution performance at the instrument's theoretical limit
limit is the maximum resolution possible for a theoretically perfect, or ideal, optical system. The diffraction-limited angular resolution, in radians
Diffraction-limited_system
Difference between the dimensions of mathematical object and a sub-object
the codimension equals the height of the defining ideal. For this reason, the height of an ideal is often called its codimension. The dual concept is
Codimension
Energy contained within a system
impossible to calculate the total internal energy. Therefore, a convenient null reference point may be chosen for the internal energy. The internal energy
Internal_energy
Various meanings of the terms
{v} )=0} . Depending on the bilinear form, the vector space may contain null vectors, non-zero self-orthogonal vectors, in which case perpendicularity
Orthogonality
Ancient Greek social and political organisation
nothing, as it is composed of citizens, and those citizens have been rendered null and void by the removal of their effectiveness. As an example Aristotle gives
Polis
worship of a holy figure. In legal context, occasionally a backing for nulling information that was presented by an attorney. Without any tangible proof
List_of_Latin_phrases_(full)
Number in {..., –2, –1, 0, 1, 2, ...}
cardinality of Z {\displaystyle \mathbb {Z} } is said to equal ℵ0 (aleph-null). The pairing between elements of Z {\displaystyle \mathbb {Z} } and
Integer
Salafi jihadist militant organisation
"The legality of all emirates, groups, states and organisations becomes null by the expansion of the khilafah's [caliphate's] authority and the arrival
Islamic_State
Reals with an extra square root of +1 adjoined
This basis is called the diagonal basis or null basis. The split-complex number z can be written in the null basis as z = x + j y = ( x − y ) e + ( x +
Split-complex_number
Password-based key derivation function
to handle a null terminator. The specification was revised to specify that when hashing strings: the string must be UTF-8 encoded the null terminator must
Bcrypt
Writing created by a person with a writing implement
personality traits and job performance, despite research showing consistently null correlations for these uses. Handwriting recognition (HWR), also known as
Handwriting
Theoretical electronics component
despite a zero input. A norator is often paired with a nullator to form a nullor. A nullator in parallel with a norator is equivalent to a short (zero voltage
Norator
Thermodynamic process with no change in enthalpy
fluid, and yet the net sum of the associated terms in the energy balance is null, thus rendering the transformation isoenthalpic. The lifting of a relief
Isenthalpic_process
Ejecta from the Sun's corona
magnetic topology with a null point above a central flux system. As shearing motions cause this central flux system to rise, the null point forms an electrical
Coronal_mass_ejection
Canadian educator (born 1942)
that, they interpret null results as only that they were unable to observe psi in a particular experiment, rather than accepting null results as indicating
James_Alcock
Device that modulates an analog carrier signal to encode digital information
Bluetooth also use modems to communicate over radio at short distances. A null modem cable is a specially wired cable connected between the serial ports
Modem
Branch of mathematics
S2CID 120689164 Kleiner 2007, p. 58. Frankel, A. (1914) "Über die Teiler der Null und die Zerlegung von Ringen". J. Reine Angew. Math. 145: 139–176 Corry,
Abstract_algebra
Country in West Asia
Donald Trump withdrew from the deal and new sanctions were imposed. This nulled the economic provisions and brought Iran to nuclear threshold status. In
Iran
Sonic Command & Sculpture with Hideharu Suzuki B-Semi Live with Nord Merzbow Null & Produktion with Produktion Disembody ZSF Produkt / Nux Organization with
Masami_Akita_discography
Uniformity in all orientations
non-zero vector v such that q(v) = 0; such a v is an isotropic vector or null vector. In complex geometry, a line through the origin in the direction of
Isotropy
et al. (2022). Large Interferometer For Exoplanets (LIFE). IV. Ideal kernel-nulling array architectures. Astronomy & Astrophysics. Konrad, B. S. et al
Large Interferometer For Exoplanets
Large_Interferometer_For_Exoplanets
City in Jharkhand, India
jamshedpur. Retrieved 16 July 2025. Braun, Alexandria; null, null; null, null; null, null; null, null; null, null (2020). "Childhood Obesity". John Heinrichs Scholarly
Jamshedpur
Physics of heat, work, and temperature
thermodynamic potentials using physical models: Helmholtz, Gibbs, Grand, and Null". The Journal of Chemical Physics. 160 (21) 214104. Bibcode:2024JChPh.160u4104N
Thermodynamics
Collection of mathematical objects
implies that there is only one such set. It is called the empty set (or null set) and is denoted ∅ {\displaystyle \varnothing } , ∅ {\displaystyle
Set_(mathematics)
Manifold or algebraic variety of dimension n in a space of dimension n+1
polynomial ring over a field, the height of an ideal is 1 if and only if the ideal is a principal ideal. In the case of possibly reducible hypersurfaces
Hypersurface
gives a measure algebra on the Boolean algebra of measurable sets modulo null sets. A measure algebra is a Boolean algebra B {\displaystyle B} with a measure
Measure_algebra
operational amplifier. A nullator is normally paired with a norator to form a nullor. Two trivial cases are worth noting: A nullator in parallel with a norator
Nullator
Country in West Asia
Security Council declaring both the Jerusalem Law and the Golan Heights Law null and void. Several waves of Ethiopian Jews immigrated to Israel since the
Israel
Digital communication network standard for controlling stage lighting and effects
Most data is sent with the default Null Start Code of 00h. Quoting from the standard: 8.5.1 NULL START code A NULL START Code identifies subsequent data
DMX512
Portion of the electromagnetic spectrum that is visible to the human eye
ISBN 978-0-395-20716-1. Evans, Ralph M. (1974). The perception of color (null ed.). New York: Wiley-Interscience. ISBN 978-0-471-24785-2. McLaren, K. (March
Visible_spectrum
Special type of element of a set
{\displaystyle x^{2}=x} Identity element – Specific element of an algebraic structure Null semigroup Howie 1995, pp. 2–3 Kilp, Knauer & Mikhalev 2000, pp. 14–15 Golan
Absorbing_element
Fictional character in the Overwatch franchise
2017, lead concept artist Qui Fang was developing designs for Overwatch's "Null Sector", a villain group of sentient robots called omnics. While working
Ramattra
Control loop feedback mechanism
regulation on a system where the error is already close to 0 with u(t) non null, it prevents from sending the output to 0. Here is a very simple and explicit
PID_controller
Computer graphics 3D reference and test model
support the teapot as a built-in geometry by calling RiGeometry("teapot", RI_NULL). Along with the expected cubes and spheres, the GLUT library even provides
Utah_teapot
2025, stated that any attempt to recognise Somaliland was to be considered "null and void" as well as a threat to Somalia's national security. India During
International recognition of Somaliland
International_recognition_of_Somaliland
Branch of mathematics
functions f and g in k[An], then f − g is a polynomial function which is null on V and thus belongs to I(V). Thus k[V] may be identified with k[An]/I(V)
Algebraic_geometry
Shell command for copying and converting file data
in place. For example, this overwrites the first 512 bytes of a file with null bytes: dd if=/dev/zero of=path/to/file bs=512 count=1 conv=notrunc Option
Dd_(Unix)
1975–2014 period in Spanish history
subject, although they managed to make the powers of the Crown practically null and void. On the other hand, the state-level parties accepted the proposal
Reign_of_Juan_Carlos_I
Government system where political power lies with the people
worst abuses of serfdom. In force for less than 19 months, it was declared null and void by the Grodno Sejm that met in 1793. Nonetheless, the 1791 Constitution
Democracy
Matrix normal form
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
Smith_normal_form
the legal system and ruling that it "violates the Constitution and is thus null and void." The Department of Justice filed a notice on June 30 that it would
Targeting of law firms and lawyers under the second Trump administration
Targeting_of_law_firms_and_lawyers_under_the_second_Trump_administration
Distance over which a wave's shape repeats
is limited according to the Rayleigh criterion, the radius to the first null of the Airy disk, to a size proportional to the wavelength of the light used
Wavelength
Form of source code, without regard to meaning
semantically defined (because p is a null pointer, the operations p->real and p->im have no meaning): complex *p = NULL; complex abs_p = sqrt (p->real * p->real
Syntax (programming languages)
Syntax_(programming_languages)
Component for guiding radio waves
port. An ideal OMT exhibits perfect matching (null terms on the diagonal), unitary direct transmission terms and infinite XPD and isolation (null corresponding
Orthomode_transducer
Generalization of mass, length, area and volume
}\right).} The second condition is equivalent to the statement that the ideal of null sets is κ {\displaystyle \kappa } -complete. A measure space ( X , Σ
Measure_(mathematics)
2021 studio album by Julia Michaels
The album's subject matter centers on themes of love, self reflection and ideal womanhood. Upon its release, Not in Chronological Order received generally
Not_in_Chronological_Order
Period of Spanish history (1936–1975)
up exclusively in Spanish and any written in other languages were deemed null and void. The use of any other language was forbidden in schools, advertising
Francoist_Spain
General-purpose programming language
initialization expressions for data objects Initialization of pointers to NULL() Clearly defined that ALLOCATABLE arrays are automatically deallocated when
Fortran
NULL IDEAL
NULL IDEAL
Boy/Male
Celtic
Champion.
Boy/Male
Hindu
Battle maiden
Surname or Lastname
English
English : nickname for a strong, aggressive, bull-like man, from Middle English bul(l)e, bol(l)e. Occasionally, the name may denote a keeper of a bull. Compare Bulman.German (mainly northern) : from a byname for a cattle breeder, keeper, or dealer. Compare South German Ochs.South German : nickname for a short fat man, a variant of Bolle, or a nickname for a man with the physical characteristics of a bull.
Surname or Lastname
English
English : nickname from Middle English gulle ‘gull’ or gul(le) (Old Norse gulr) ‘yellow’, ‘pale’ (of hair or complexion).Swiss German : nickname for an irascible or unreliable person, from an Alemannic form of Latin gallus ‘rooster’. See also Guell.
Girl/Female
Afghan, Australian, Danish, Swedish
God
Girl/Female
Arabic
Arabian Jasmine
Surname or Lastname
English
English : from an Old English personal name, Lulla.German (Lüll) : from a short form of any of the Germanic personal names formed with liut- ‘people’ as the first element.Catalan (also Llull) : from the personal name Lullus, probably of Germanic origin.
Girl/Female
American, Australian, British, Danish, English, French, German, Greek, Irish, Swedish
Shining Light; Light; The Light of the Sun from Eleanor and Variation of Helen; Sun Ray; Stone; Champion; Horn; Torch; Moon; Moon Elope
Boy/Male
Shakespearean
Love's Labours Lost' A constable.
Boy/Male
British, English
Grinder
Surname or Lastname
English
English : variant of Hill 1.English : from a pet form of Hugh.
Surname or Lastname
English
English : from the Old English personal name Cula.Americanized spelling of German and Swedish Kall or German Koll.
Boy/Male
British, English, Spanish
Strong Leader; Empty
Male
English
Medieval pet form of English Oliver, probably NOLL means "elf army."
Surname or Lastname
English
English : unexplained.Possibly a shortened form of any of several German compound surnames formed with Full- or Füll-.
Surname or Lastname
Dutch and German
Dutch and German : from the personal name Nel, a reduced form of Cornelius.South German : nickname from Middle High German nelle ‘crown of the head’, perhaps denoting an obstinate person.English : from the Middle English personal name Nel(le), a variant of Neill.
Surname or Lastname
English
English : of uncertain origin, possibly from an unrecorded late survival of the Old English personal name Tula.South German (Tüll) : from a nickname for someone who was patient, from Middle High German dult ‘patience’; or from a personal name formed with the same word; or from Middle High German tult, dult ‘fair’, ‘festival’ (Bavarian Dult).South German : nickname for a stubborn man, Tull.Altered spelling of German Toll.
Girl/Female
Greek American English French
Shining light. The bright one.
Female
English
Pet form of English Eleanor, NELL means "foreign; the other."
Male
Hungarian
Hungarian form of Greek Emmanouel, EMÃNUEL means "God is with us."
NULL IDEAL
NULL IDEAL
Boy/Male
Muslim
Intelligent
Boy/Male
Hindu, Indian
Happy
Girl/Female
Hebrew, Hindu, Indian, Swiss
Nice
Girl/Female
Hindu
Wife of Pandavas, One from the kingdom of panchala, Draupadis name
Girl/Female
British, Gujarati, Hindu, Indian, Malaysian
Goddess of Knowledge; Goddess Saraswati / Lakshmi
Male
Russian
(КолÑ) Pet form of Russian Nikolai, KOLYA means "victor of the people."
Girl/Female
Indian
Expressive, A young deer (Celebrity Name: Raveena Tandon)
Girl/Female
Muslim
Scattered pearls, Beads
Boy/Male
Australian, Indian, Punjabi, Sikh
Brave as God
Boy/Male
Hebrew American
Mountain of God.
NULL IDEAL
NULL IDEAL
NULL IDEAL
NULL IDEAL
NULL IDEAL
n.
A cully; a dupe; a gull. See Cully.
a.
Full to the brim; quite full; chock-full.
v. t.
To endeavor to raise the market price of; as, to bull railroad bonds; to bull stocks; to bull Lake Shore; to endeavor to raise prices in; as, to bull the market. See 1st Bull, n., 4.
v. t.
To gather with the hand, or by drawing toward one; to pluck; as, to pull fruit; to pull flax; to pull a finch.
v. t.
To move or operate by the motion of drawing towards one; as, to pull a bell; to pull an oar.
v. t.
To dispirit or deaden; to dull or blunt.
a.
Of or pertaining to a bull; resembling a bull; male; large; fierce.
v. t.
To heat, sweeten, and enrich with spices; as, to mull wine.
superl.
Furnishing little delight, spirit, or variety; uninteresting; tedious; cheerless; gloomy; melancholy; depressing; as, a dull story or sermon; a dull occupation or period; hence, cloudy; overcast; as, a dull day.
n.
A knob, handle, or lever, etc., by which anything is pulled; as, a drawer pull; a bell pull.
v. t.
To strip off or separate the hull or hulls of; to free from integument; as, to hull corn.
n.
A promontory; as, the Mull of Cantyre.
Compar.
Abundantly furnished or provided; sufficient in. quantity, quality, or degree; copious; plenteous; ample; adequate; as, a full meal; a full supply; a full voice; a full compensation; a house full of furniture.
n.
A contest; a struggle; as, a wrestling pull.
a.
No; not any; as, nul disseizin; nul tort.
n.
The act of rowing; as, a pull on the river.
a.
Quite full; choke-full.
Compar.
Not wanting in any essential quality; complete, entire; perfect; adequate; as, a full narrative; a person of full age; a full stop; a full face; the full moon.
v. i.
To become dull or stupid.
superl.
Not bright or clear to the eye; wanting in liveliness of color or luster; not vivid; obscure; dim; as, a dull fire or lamp; a dull red or yellow; a dull mirror.