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Topics referred to by the same term
The Unknown Quantity may refer to: The Unknown Quantity (novel), a 1953 mystery novel by Mignon G. Eberhart The Unknown Quantity, a short story by O. Henry
The_Unknown_Quantity
1953 mystery novel by Mignon G. Eberhart
The Unknown Quantity is a mystery novel by Mignon G. Eberhart published by Random House in 1953 and was issued in the UK by Collins Crime Club that same
The_Unknown_Quantity_(novel)
that any equation in two unknown quantities determines a curve. In fact, the general concept of an equation in unknown quantities was alien to Greek thought
History_of_algebra
Class of mathematical expression
? {\displaystyle ?} represents the same unknown quantity in each equation; in this case the unknown quantity is 2 {\displaystyle 2} , because
Division_by_zero
1919 American silent directed by Thomas R. Mills
The Unknown Quantity is a lost 1919 American silent directed by Thomas R. Mills produced and distributed by the Vitagraph Company of America. It is based
The_Unknown_Quantity_(film)
Title meaning "anointed"
"X=The Unknown Quantity". Gerald L. K. Smith picked up the statements later, in December 1966, saying that Xmas was a "blasphemous omission of the name
Christ_(title)
Armoured personnel carrier
or "PAL"), unknown quantity, equipped with the future anti-tank missile Scout vehicle (known as "Aufklärung" or Aufkl), unknown quantity Coordination
Pandur_I_(6×6)
3rd-century Greek mathematician
Roger (1997). The History of Mathematics: A Brief Course. Wiley-Interscience. ISBN 0-471-18082-3. Derbyshire, John (2006). Unknown Quantity: A Real And
Diophantus
Formula that provides the solutions to a quadratic equation
original [coefficient of the] unknown quantity. [Then extract the root.]". Smith 1923, p. 446 Debnath, Lokenath (2009), "The legacy of Leonhard Euler
Quadratic_formula
French mathematician (1540–1603)
confused with the term Zététique for scepticism). It denotes the known quantities by consonants (B, D, etc.) and the unknown quantities by the vowels (A,
François_Viète
Process of assigning numbers to objects or events
is the science of measurement. Measurement can also be described as the comparison of an unknown quantity with a known or standard quantity. The earliest
Measurement
Distribution of an uncertain quantity
vote for a particular politician in a future election. The unknown quantity may be a parameter of the model or a latent variable rather than an observable
Prior_probability
Technique for increasing the precision of estimates in Monte Carlo experiments
the errors in estimates of known quantities to reduce the error of an estimate of an unknown quantity. Let the unknown parameter of interest be μ {\displaystyle
Control_variates
Branch of mathematics
relies on the same operations while allowing variables in addition to regular numbers. Variables are symbols for unspecified or unknown quantities. They make
Algebra
Represented by the Above Unknown Quantity." The Experiment: a farce, in one act, published in Quebec. Canada and the Crimea, or Sketches of a Soldier's
George_Ranken_(soldier)
Analysis of the dimensions of different physical quantities
physical quantities is the analysis of their physical dimension or quantity dimension, defined as a mathematical expression identifying the powers of the base
Dimensional_analysis
Method of estimating the parameters of a statistical model
In Bayesian statistics, the maximum a posteriori (MAP) estimate of an unknown quantity is the mode of the posterior density. The MAP can be used to obtain
Maximum a posteriori estimation
Maximum_a_posteriori_estimation
Wheeled armoured fighting vehicle
of the Bundeswehr. Variant ordered, but the quantity in the variant is unknown Denmark (309) The Piranha V was selected over the CV90 Armadillo the PMMC
Mowag_Piranha_V
Backhoe loader
against the Russian Invasion. Ireland (1) 1 purchased, and used for the UNIFIL mission of the Army. Israel (unknown quantity) New Zealand (6) The Army received
JCB_HMEE
Common abbreviation of the word "Christmas"
omission of the name of Christ" and that "'X' is referred to as being symbolical of the unknown quantity". Smith further argued that the Jewish people
Xmas
Type of functional equation (mathematics)
relates one or more unknown functions and their derivatives. In applications, the functions generally represent physical quantities, the derivatives represent
Differential_equation
Jewish Dutch art dealer
(1,113 numbered paintings and an unknown quantity of unnumbered paintings) was left behind to be looted and became the largest claim for restitution of
Jacques_Goudstikker
Function of observations and unobservable parameters
quantity or pivot is a function of observations and unobservable parameters such that the function's probability distribution does not depend on the unknown
Pivotal_quantity
service with the Croatian Army, even though some are over 50 years old. Torpedo 4x4 trucks, light 2.5T trucks were built in large quantities. Some 80 samples
List of equipment of the Croatian Army
List_of_equipment_of_the_Croatian_Army
Symbol representing a mathematical object
constant of the theory, or is being quantified over. The earliest uses of an "unknown quantity" date back to at least the Ancient Egyptians with the Moscow
Variable_(mathematics)
Series of medium-range radars
2026, and the contract has a value of SEK 1 billion. United Kingdom (unknown quantity) The UK plans to procure the GM 200 MM/C as part of the Serpens Project
Ground Master 200 Multi Mission
Ground_Master_200_Multi_Mission
February 25, 2022. Grobar, Matt (February 5, 2026). "Chris Bremner's Unknown Quantity Sells R-Rated Comedy Spec 'White Knight' From Christopher William Young
List_of_Screen_Gems_films
galvanometer, the moving part has a large moment of inertia, thus giving it a long oscillation period. It is really an integrator measuring the quantity of charge
Ballistic_galvanometer
MRAP IMV
variant of the Sisu GTP ordered, unknown quantity. August 2024, framework agreement in common with Finland 260 vehicles (split unknown). At the same time
Sisu_GTP
Weapon
Finland purchased an unknown quantity which were used during the Winter War. The 75 mm Schneider-Danglis 06/09 led to development of the 75 M.P., 75 M.P.C
75_mm_Schneider-Danglis_06/09
1982 box set by the Beatles
sale individually. An unknown quantity of unnumbered red boxes (sometimes reported to be between 300 and 500) were issued in the UK, while 1000 numbered
The_Beatles_Mono_Collection
Battle rifle
Uganda United Arab Emirates Ukraine: An unknown quantity, seen in the hands of Ukrainian forces during the Russian invasion of Ukraine. Uruguay Venezuela:
FN_FAL
Tree representation of the abstract syntactic structure of source code
addition of an unknown quantity of children. To support compiler verification it should be possible to unparse an AST into source code form. The source code
Abstract_syntax_tree
American drug researcher (1962–1996)
second book, Salvinorin, addressed the effects of Salvia divinorum. Turner died after injecting an unknown quantity of ketamine while in a bathtub, drowning
D._M._Turner
Military light utility/combat multi-role vehicle
hardware. The vehicles would replace CANSOFCOM's fleet of HMMWV under the Next Generation Fighting Vehicle project. Greece (unknown quantity) The Hellenic
Joint_Light_Tactical_Vehicle
Branch of mechanics concerned with balance of forces in nonmoving systems
solve for unknown quantities acting on the system. Archimedes (c. 287–c. 212 BC) did pioneering work in statics. Later developments in the field of statics
Statics
American writer (1862–1910)
and the Graft", "The Call of the Tame", "The Unknown Quantity", "The Thing's the Play", "A Ramble in Aphasia", "A Municipal Report", "Psyche and the Pskyscraper"
O._Henry
1935 novel by E. R. Eddison
intrigue against each other. The character of Lessingham is an unknown quantity, with a strong character of his own, but the reader is kept uncertain over
Mistress_of_Mistresses
Mathematical symbol of equality
Archive. Archived from the original on 29 November 2013. Retrieved 19 October 2013. Derbyshire, John (2006). Unknown Quantity: A Real And Imaginary History
Equals_sign
Named container for a particular type of data
paired with an associated symbolic name, which contains some known or unknown quantity of data or object referred to as a value; or in simpler terms, a variable
Variable (high-level programming language)
Variable_(high-level_programming_language)
Person who is not in education, employment, or training
"Neets are an unknown quantity" . BBC News. 5 November 2007. Accessed 26 August 2011. Pemberton Simon. "Tackling the NEET generation and the ability of policy
NEET
Mathematical formula expressing equality
A functional equation is an equation in which the unknowns are functions rather than simple quantities Equations involving derivatives, integrals and
Equation
Christmas ideological, political and religious disputes
conservative organization founded in 1937, attacked the use of Xmas in an article titled "X=The Unknown Quantity". The claims were picked up later by Gerald L. K
Christmas_controversies
Turkish loitering munition
pre-selected target. Azerbaijan Minimum 27 Turkey 500 operational Peru Unknown quantity Anti-personnel and anti-armour systems procured by Diseños Casanave
STM_Kargu
Method for estimating the unknown parameters in a linear regression model
diagonal element of this matrix. The estimate of this standard error is obtained by replacing the unknown quantity σ2 with its estimate s2. Thus, s
Ordinary_least_squares
Sample used for measurements
test mass is a known quantity of mass used in a measuring instrument as a reference for the measurement of an unknown quantity. A mass used to calibrate
Proof_mass
South Korean 155 mm towed howitzer
Iran : Unknown quantity purchased during Iran–Iraq War. Later copied and produced locally as HM-41. Myanmar : More than 100 in service with the Myanmar
KH179
captured large quantity of ammunition from #Ukrainian Forces in #Avdiivka, 21 February 2024 @UAWeapons (16 March 2023). "#Ukraine: The Ukrainian army
List of military aid to Ukraine during the Russo-Ukrainian war
List_of_military_aid_to_Ukraine_during_the_Russo-Ukrainian_war
Methods for numerical approximations
accepted in the same manner as for an iterative method. As an example, consider the problem of solving 3x3 + 4 = 28 for the unknown quantity x. For the iterative
Numerical_analysis
Algorithm for polynomial evaluation
of Solving Equations with Ease and Expedition; by which the True Value of the Unknown Quantity is Found Without Previous Reduction. With a Supplement,
Horner's_method
Complex number representing a particular sine wave
V c {\displaystyle V_{\text{c}}} is the unknown quantity to be determined. In the phasor shorthand notation, the differential equation reduces to: i ω
Phasor
Twenty-first letter in many Semitic alphabets
the hypothesis that x is derived ultimately from the mediaeval transliteration xei of shei "thing", used by the Arabs to denote the unknown quantity,
Shin_(letter)
Scottish writer (1887-1959)
The Hill of Lies by Heinrich Mann, London, Jarrolds, 1934 Mottke, the Thief by Sholem Asch, New York, G.P. Putnam's Sons, 1935 The Unknown Quantity by
Edwin_Muir
Armoured Wheeled Vehicle
in service. Royal Air Force - unknown quantity used by the RAF Regiment. Royal Marines - unknown quantity used by the Royal Marines. Estonia Estonian
Jackal_(vehicle)
Sniper rifle
Guatemala: 25 rifles Ivory Coast: Unknown, a quantity of 170 rifles was reported in 1984. Kuwait: Unknown quantity Luxembourg: Less than 10 rifles ordered
FN_Model_30-11
British review of literature and the arts
and the arts, flourished, or at any rate existed, between the years 1959 and 1962. It took its name from the algebraic symbol for the unknown quantity—‘incalculable
X_(magazine)
British experimental blown flap aircraft
the performance of blown flaps, which were commonly known in Britain as "jet flaps", At the time, they were a relatively unknown quantity, thus the Ministry
Hunting_H.126
Mathematical ratio relevant to climbing safety
9.5 m/s at the end of falling the distance h0. The mass m0 used in the fall is 80 kg. Using these values to eliminate the unknown quantity E leads to
Fall_factor
American paleoconservative
Henry Press, an imprint of the National Academies Press, published another Derbyshire book of popular mathematics: Unknown Quantity: A Real And Imaginary History
John_Derbyshire
Electronic measuring instrument that combines several measurement functions in one unit
comparing the unknown quantity to a reference voltage or resistance. While useful in the lab, the devices were very slow and impractical in the field. These
Multimeter
American actor (1866–1949)
Reapers (1917) as Henry Ainsworth The Planter (1917) as Short The Unknown Quantity (1919) as Septimus Kinsolving A Girl at Bay (1919) as Frank Galt Among
Harry_Davenport_(actor)
2007 film by John Carney
largely unknown quantity alongside the well-known and either loved or loathed Hansard, is luminous." Michael Dwyer of The Irish Times gave the film the same
Once_(film)
Electronic warfare system
2016 Morocco - Aselsan signed an agreement with Morocco to deliver unknown quantity of Koral EW systems. VURAL electronic warfare system "Düşman radarları
KORAL electronic warfare system
KORAL_electronic_warfare_system
Immunoassay that uses radiolabeled molecules
and as a result, the two specifically bind to one another. Then, a sample of serum from a patient containing an unknown quantity of that same antigen
Radioimmunoassay
UK based funk band
the services of Central Line guitarists/songwriters Henri Defoe and Michael Finbarr Murphy (the latter having also recently produced Unknown Quantity
Heatwave_(band)
English artist and illustrator (1872–1955)
Sons published the first edition of Van Dyke's The Unknown Quantity, with artwork by various illustrators, of which Garth Jones was one. The book included
Alfred_Garth_Jones
Chinese Wheeled AFV
Burkina Faso Armed Forces: Approximately 25 units received in 2024. Unknown quantity of VN22B delivered in 2025. Iraq - Iraqi Ground Forces: Manufactured
VN22
Football match
by the clubs of Western Europe to be a more unpredictable opponent (although not an unknown quantity, as they had reached the quarterfinals of the 2005–06
2008_UEFA_Cup_final
1975 film by Steven Spielberg
Independent. p. 11-A. New York (AP) (May 26, 1978). "Scariness of Jaws 2 unknown quantity". The StarPhoenix. p. 21. Thomson 2012, p. 443. "Top Lifetime Adjusted
Jaws_(film)
Indian mathematician and astronomer (598–668)
bar. Multiplication, evolution, and unknown quantities were represented by abbreviations of appropriate terms. The extent of Greek influence on this syncopation
Brahmagupta
Concept in air navigation
using protractor and dividers. The unknown quantities are read from the chart using the same tools. Alternatively, the E6B flight computer (a circular
Wind_triangle
Mathematical notation based on the Arabic script
the hypothesis that x is derived ultimately from the mediaeval transliteration xei of shei "thing", used by the Arabs to denote the unknown quantity,
Modern Arabic mathematical notation
Modern_Arabic_mathematical_notation
Roman emperor from 361 to 363, Neoplatonic philosopher
count on the wholehearted support of the Western army which had aided his rise, the Eastern army was an unknown quantity originally loyal to the Emperor
Julian_(emperor)
Neolithic archaeological site in Scotland
protected by dunes. Although the visible buildings give an impression of an organic whole, certainly, an unknown quantity of additional structures had
Skara_Brae
Probability distribution
the measurements of some unknown quantity V, and sought the most probable estimator of that quantity: the one that maximizes the probability φ(M − V) ·
Normal_distribution
Indian mathematician and astronomer (1114–1185)
contains the following topics: Positive and negative numbers. The 'unknown' (includes determining unknown quantities). Determining unknown quantities. Surds
Bhāskara_II
Military light utility vehicle
Additionally, the VECTOR can be transported in a 20-foot container. Front view Side view Rear view Austrian Armed Forces (unknown quantity) Selected in
Versatile Expeditionary Commando Tactial Off Road
Versatile_Expeditionary_Commando_Tactial_Off_Road
American writer (1926–1968)
attended the wedding party confirm that he took an unknown quantity of secobarbital, a powerful barbiturate. The physician who performed the autopsy wrote
Neal_Cassady
Number with a real and an imaginary part
Variable I. Springer. ISBN 978-0-387-90328-6. Derbyshire, John (2006). Unknown Quantity: A real and imaginary history of algebra. Joseph Henry Press. ISBN 978-0-309-09657-7
Complex_number
American loitering missile
unnumbered quantity of Switchblade drones. Canada Canadian Armed Forces: In Feb. 2025, a $67 million CAD contract awarded for an unknown quantity of Switchblade
AeroVironment_Switchblade
German artist (born 1950)
of Art, Raleigh, NC 2001 "Tele[Visions]" "Media Connection" 2002 "Unknown Quantity," Foundation Cartier pour L'Art Contemporian, Paris "Monitor 2," Gagosian
Wolfgang_Staehle
Italian desert reconnaissance and patrol vehicle
Udine and Bologna they were used until 1954. An unknown quantity were produced specifically for the Italian State Police in 1946. S.P.A. (Società Piemontese
SPA-Viberti_AS.42
which Iran received in fairly large quantities during the fleeing of part of the Afghan military in Iran in 2021 when the Taliban took power. -". x.com. 20
List of equipment of the Iranian Army
List_of_equipment_of_the_Iranian_Army
German-style board game designed by Andreas Seyfarth
of each can always be requested by a player. As the game enters its later stages, the unknown quantity of shipping tokens and its denominations require
Puerto_Rico_(board_game)
2025 video game
destroy the ancient structure or retain it and sacrifice an unknown quantity of the people of Shatterscarp at random. The final civilization the Envoy encounters
Avowed
Sanskrit word for "rule of three"
pramāṇa. The unknown quantity is called icchā-phala, that is, the phala corresponding to the icchā. Āryabhaṭa gives the following solution to the problem:
Trairāśika
Polish man-portable air-defense system
in 2010 for testing. Russia – Captured unknown quantity of launchers in Georgia (One launcher was sent to the separatists in Ukraine). United States –
PZR_Grom
Approximate multiplication and division using formulas from trigonometry
and c are the angles subtended at the centre of the sphere by the corresponding arcs. When one quantity in such a formula is unknown but the others are
Prosthaphaeresis
Submachine gun
Police Turkey: Used by SAT. Ukraine: Unknown quantities delivered from the Czech Republic, deployed in combat in the 2022 Russian invasion of Ukraine. Uruguay:
CZ_Scorpion_Evo_3
Mesoamerican civilization (c. 2000 BC – 1697 AD)
trace in the archaeological record. Some commoner dwellings were raised on low platforms, and these can be identified, but an unknown quantity of commoner
Maya_civilization
Function related to statistics and probability theory
regarded as a fixed unknown quantity rather than as a random variable being conditioned on. The likelihood function does not specify the probability that
Likelihood_function
1977 film by George Lucas
box-office draw". The StarPhoenix. Postmedia Network Inc. p. 10. New York (AP) (May 26, 1978). "Scariness of Jaws 2 unknown quantity". The StarPhoenix. Postmedia
Star_Wars_(film)
Moving average and polynomial regression method for smoothing data
Y_{i}\sim f(y,\theta (x_{i})),} where the parameter function θ ( x ) {\displaystyle \theta (x)} is the unknown quantity to be estimated. To estimate θ ( x
Local_regression
Romanian film director
Solaris and is considered one of the non-fiction cult films of the 1990s.[citation needed] His 2005 project, Unknown Quantity, creates a fictional conversation
Andrei_Ujică
Polish modular assault rifle and variants
Ukraine, but later on such claims have been denied. United States: Unknown quantity sold to Special Operations Command (USSOCOM). March 23 Movement Ingush
FB_MSBS_Grot
Ancient city in the Troad, Anatolia
for the moment x, the unknown quantity. Pliny says "The little town of Dardanum is distant from Rhœteum seventy stadia." The position of Rhoetium is not
Dardanus_(city)
U.S. man-portable surface-to-air missile
identified in July 2000 and the deliveries were completed in 2003. Ukraine: Lithuania and Latvia have transferred unknown quantities of Stinger missiles from
FIM-92_Stinger
Mathematical tool for studying knots
calculation is described in the table below, where ? denotes the unknown quantity we are solving for in each relation: Thus the Alexander polynomial for
Skein_relation
French mathematician (1928–2014)
Unknown Quantity: A Real and Imaginary History of Algebra. National Academies Press. p. 314. ISBN 9780309164801. Leith, Sam (20 March 2004). "The Einstein
Alexander_Grothendieck
Spring water brand
water". Tampa Bay Times. Retrieved 2021-04-27. Samek, Kelly (2004). "Unknown Quantity: The Bottled Water Industry and Florida's Springs". Journal of Land Use
Zephyrhills_(water)
THE UNKNOWN-QUANTITY
THE UNKNOWN-QUANTITY
Surname or Lastname
English (mainly East Anglia)
English (mainly East Anglia) : topographic name for someone who lived by a common pasture, Middle English tye (Old English tēag).North German : from a short form, Tide, of the personal name Dietrich.
Girl/Female
Hindu
The unknown one
Male
Native American
Native American Navajo name TSE means "rock."
Female
English
 Pet form of English Theodora, THEA means "gift of God." Compare with another form of Thea.
Female
Vietnamese
Vietnamese name THU means "autumn."
Surname or Lastname
English (Yorkshire)
English (Yorkshire) : variant of Tye.
Girl/Female
Tamil
Amaanya | அமாநà¯à®¯à®¾Â
Unknown
Amaanya | அமாநà¯à®¯à®¾Â
Girl/Female
Tamil
Unknown
Female
Greek
 Short form of Greek and Latin Dorothea, THEA means "gift of God." Compare with another form of Thea.
Boy/Male
Unknown
Origin unknown.
Girl/Female
Tamil
The unknown one
Male
English
Short form of English Theodore, THEO means "gift of God," and other names beginning with Theo-.
Boy/Male
Unknown
Origin unknown.
Girl/Female
Indian, Tamil
Unknown Species; Not Known
Female
Vietnamese
Vietnamese name THI means "poem."
Female
German
Pet form of German Kätharina, KÄTHE means "pure."
Male
English
English surname transferred to forename use, derived from the Middle English word tye, TYE means "pasture."
Boy/Male
English
From the enclosure.
Girl/Female
Greek American
Goddess; godly. Also as abbreviation of names like Althea and Dorothea. The mythological Thea was...
Girl/Female
Unknown
Origin unknown.
THE UNKNOWN-QUANTITY
THE UNKNOWN-QUANTITY
Boy/Male
Hindu, Indian, Punjabi, Sikh
True Faithful Pious Sacred
Girl/Female
Indian, Telugu
Swan
Boy/Male
American, Australian, Basque, British, Celtic, Christian, English, Gaelic, German, Irish, Latin
Fierce; Strong; Warlike; Ready for Battle
Male
Hebrew
(×ַבְרָ×) Hebrew name ABRAM means "father of elevation." In the bible, this is Abraham's name before God changed it. Also spelled Avram. Compare with another form of Abram.
Boy/Male
Hindu, Indian
Supreme Happiness
Boy/Male
Danish, German, Swedish
Ancestor
Boy/Male
Indian, Punjabi, Sikh
Glorious Support
Girl/Female
African, Arabic, Swahili
Sensible
Boy/Male
Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Moon
Girl/Female
Scottish American French
Scottish version of the Old French Jehane, a feminine form of John: God is gracious.
THE UNKNOWN-QUANTITY
THE UNKNOWN-QUANTITY
THE UNKNOWN-QUANTITY
THE UNKNOWN-QUANTITY
THE UNKNOWN-QUANTITY
a.
Unknown; strange.
a.
Unknown.
definite article.
A word placed before nouns to limit or individualize their meaning.
a.
Not known; unknown.
v. t.
To deprive of a crown; to take the crown from; hence, to discrown; to dethrone.
n.
Somebody; one unknown.
a.
Unknown.
v. t.
To cease to know; to lose the knowledge of.
v. t.
To fail of knowing; to be ignorant of.
a.
Not known; unknown.
adv.
By that; by how much; by so much; on that account; -- used before comparatives; as, the longer we continue in sin, the more difficult it is to reform.
pron.
The objective case of they. See They.
a.
Fully known; generally known or acknowledged.
v. i.
See Thee.
a.
Unknown.
a.
Unknown; undiscovered.
n.
Anything, or any part, corresponding to the toe of the foot; as, the toe of a boot; the toe of a skate.
a.
Not known; not apprehended.
a.
Unknowing; also, unknown; unmeaning.
a.
Unknown; strange.