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Mathematical term
mathematics, an index set is a set whose members label (or index) members of another set. For instance, if the elements of a set A may be indexed or labeled
Index_set
Thai stock market index
The SET Index is a Thai composite stock market index calculated by the prices of all common stocks (including unit trusts of property funds) on the main
SET_Index
Classes of partial recursive functions
In computability theory, index sets describe classes of computable functions; specifically, they give all indices of functions in a certain class, according
Index_set_(computability)
Collection of objects, associated with an index set
family, or indexed family, is a collection of objects, each associated with an element, known as an index, that belongs to some index set. For example
Indexed_family
Collection of mathematical objects
. When the index set is { 1 , 2 } {\displaystyle \{1,2\}} , an indexed family is called an ordered pair. When the index set is the set of the n {\displaystyle
Set_(mathematics)
Topics referred to by the same term
Look up Index, index, indexes, indice, or indices in Wiktionary, the free dictionary. Index (pl.: indexes or indices) most commonly refers to: Index (publishing)
Index
Index page of a website's directory
allowing dynamic content to be used as the index page (e.g. index.cgi, index.pl, index.php, index.shtml, index.jsp, default.asp) even though it may be more
Web_server_directory_index
Index of chemical compounds with the same name
(16α-hydroxy-17α-estradiol) 16β,17α-Epiestriol (16β-hydroxy-17α-estradiol) This set index article lists chemical compounds articles associated with the same name
Epiestriol_(set_index)
U.S. large-cap stock market index
The Russell 1000 Index is a U.S. stock market index that tracks the largest 1,000 stocks in the Russell 3000 Index, which represent about 93% of the total
Russell_1000_Index
Set of integers in graph theory
In graph theory, a friendly-index set is a finite set of integers associated with a given undirected graph and generated by a type of graph labeling called
Friendly-index_set
Topics referred to by the same term
Look up set in Wiktionary, the free dictionary. Set, The Set, SET or SETS may refer to: Set (mathematics), a collection of elements Category of sets, the
Set
Stock market index
below its all-time highs, the index set a new record annual close of 4,176.59 on December 31, 2013. On March 2, 2015, the index closed above 5,000 for the
Nasdaq_Composite
British stock market index
Index, also called the FTSE 100 Index, FTSE 100, FTSE or, informally, the "Footsie" /ˈfʊtsi/, is the United Kingdom's best-known stock market index and
FTSE_100_Index
Indexed collection of objects and morphisms in a category
an indexed family in set theory. The primary difference is that in the categorical setting one has morphisms that also need indexing. An indexed family
Diagram_(category_theory)
Collection of random variables
with an element in the set. The set used to index the random variables is called the index set. Historically, the index set was some subset of the real line
Stochastic_process
Type of database index
document or a set of documents (named in contrast to a forward index, which maps from documents to content). The purpose of an inverted index is to allow
Inverted_index
Composite statistic of life expectancy, education, and income indices
The Human Development Index (HDI) is a statistical composite index of life expectancy, education (mean years of schooling completed and expected years
Human_Development_Index
Measure of similarity and diversity between sets
The Jaccard index is a statistic used for gauging the similarity and diversity of sample sets. It is defined in general taking the ratio of two sizes
Jaccard_index
Notation system for crystal lattice planes
However they do not operate by similarly adding a redundant index to the regular three-index set. For example, the reciprocal lattice vector (hkl) as suggested
Miller_index
Stock market index in Hong Kong
The Hang Seng Index (HSI) is a market-capitalisation-weighted stock market index in Hong Kong adjusted for free float. It tracks and records daily changes
Hang_Seng_Index
American stock market index composed of 30 industry leaders
Average (DJIA), Dow Jones, or simply the Dow (/ˈdaʊ/), is a stock market index of 30 prominent companies listed on stock exchanges in the United States
Dow_Jones_Industrial_Average
Virtual reality headset by Valve
describing the improvements over the previous model. The Valve Index sold an estimated 149,000 sets in 2019. 103,000 were in the fourth quarter following the
Valve_Index
Index of articles associated with the same name
Patrice Petro After Capitalism, book by Michael Spence Post-capitalism This set index article includes a list of related items that share the same name (or
After_Capitalism_(set_index)
Index of articles associated with the same name
(disambiguation) The Dispatch (disambiguation) Dispatch News Service This set index article includes a list of related items that share the same name (or
News_Dispatch_(set_index)
Any collection of sets, or subsets of a set
In set theory and related branches of mathematics, family or collection is used to mean set, indexed set, multiset, tuple, or class. It is usually used
Family_of_sets
Set of elements in any of some sets
is an index set and A i {\displaystyle A_{i}} is a set for every i ∈ I {\displaystyle i\in I} . In the case that the index set I is the set of natural
Union_(set_theory)
Index of articles associated with the same name
512 TR (1991–1994; Ferrari 512 Testa Rossa), street-legal supercar This set index article includes a list of related items that share the same name (or
Ferrari_TR_(set_index)
Polynomial in combinatorial mathematics
cycle index is a polynomial in several variables which is structured in such a way that information about how a group of permutations acts on a set can
Cycle_index
Financial metric which investors use to determine market performance
between an index fund's performance and the index, if any, is called tracking error. Stock market indices may be classified and segmented by the set of underlying
Stock_market_index
Index of articles associated with the same name
Triumph Engineering and its successor, Triumph Motorcycles Ltd. This set index article includes a list of related items that share the same name (or
Triumph_Trophy_(set_index)
Theorem in set theory
theorem is trivial if the cardinal numbers mi and ni are finite and the index set I is finite. If I is empty, then the left sum is the empty sum and therefore
Kőnig's_theorem_(set_theory)
Data structure for query optimization in databases
usually implicitly create an index on a set of columns declared PRIMARY KEY, and some are capable of using an already-existing index to police this constraint
Database_index
Korean stock market index
The Korea Composite Stock Price Index (KOSPI; Korean: 한국종합주가지수) is the index of all common stocks traded on the Stock Market Division—previously, Korea
KOSPI
Index of articles associated with the same name
in the Catholic Church Veneration of saints Veneration of relics This set index article includes a list of related items that share the same name (or
Veneration_(disambiguation)
Linear algebra concept
vectors indexed by an index set I {\displaystyle I} (the cardinality of I {\displaystyle I} is the dimension of V {\displaystyle V} ), the dual set of B
Dual_basis
Set of elements common to all of some sets
set, and A i {\displaystyle A_{i}} is a set for every i ∈ I . {\displaystyle i\in I.} In the case that the index set I {\displaystyle I} is the set of
Intersection_(set_theory)
Measure of a scholar's citation impact
index is based on the set of the scientist's most cited papers and the number of citations that they have received in other publications. The index has
H-index
Large-cap American stock market index
Industry classification of the components of the index per the Global Industry Classification Standard as of July 1, 2026[update] Information Technology
S&P_500
Dutch stock market index
adoption of the Euro). The index's peak to date was set on 26 October 2021 816.91 After the dot-com bubble in 1999, the index value more than halved over
AEX_index
Primary stock indices of the Stock Exchange of Thailand
Exchange of Thailand (SET) in Bangkok. The SET50 Index and the SET100 Index were created "to accommodate the issuing of index futures and options in
SET50_Index_and_SET100_Index
Country ranking by public sector corruption
The Corruption Perceptions Index (CPI) is an index published annually by Transparency International, a German registered association, since 1995. It scores
Corruption_Perceptions_Index
U.S. small-cap stock market index
The Russell 2000 Index is a small-cap U.S. stock market index that is made up of the smallest 2,000 stocks in the Russell 3000 Index. It was started by
Russell_2000_Index
Air quality measurement in Malaysia
August 2008. Pollution index based on index set 20 years ago, p. 5, South China Morning Post, 30 September 2007 "Air Pollution Index". Environmental Protection
Air_Pollution_Index
Places named Neuilly
Neuilly-sur-Seine Adrian Room, Placenames of the World (2006), p. 265. This set index article includes a list of related items that share the same name (or
Neuilly_(disambiguation)
Publications deemed heretical for Catholics
The Index Librorum Prohibitorum (English: Index of Forbidden Books) was a changing list of publications deemed heretical or contrary to morality by the
Index_Librorum_Prohibitorum
Blue chip stock market index
000 was set on 31 December 1987, equivalent to a market capitalisation of 370,437,433,957.70 French francs. On 1 December 2003, the index's weighting
CAC_40
Index of articles associated with the same name
Zamora, Zamora La Opinión, Los Angeles Opinión, Cochabamba, Bolivia This set index article includes a list of related items that share the same name (or
La_Opinión_(set_index)
Comprehensive list of Magic: The Gathering card sets since its inception in 1993
The trading card game Magic: The Gathering has released a large number of sets since it was first published by Wizards of the Coast. After the 1993 release
List of Magic: The Gathering sets
List_of_Magic:_The_Gathering_sets
Sets with no element in common
sources this is a set of sets, while other sources allow it to be a multiset of sets, with some sets repeated. An indexed family of sets ( A i ) i ∈ I ,
Disjoint_sets
British stock market index
Stock Exchange 250 Index, also called the FTSE 250 Index, FTSE 250, or, informally, the "Footsie 250" /ˈfʊtsi/, is a stock market index that consists of
FTSE_250_Index
Normalized average of price changes for goods and services
relative to a base period set at 100. Price indices serve multiple purposes. Broad indices, like the Consumer price index, reflect the economy’s general
Price_index
Measure of poverty of small areas
A deprivation index or poverty index (or index of deprivation or index of poverty) is a data set used to measure relative deprivation (a measure of poverty)
Deprivation_index
Sets whose elements have degrees of membership
families of fuzzy sets as follows: Given a family A = ( A i ) i ∈ I {\displaystyle A=(A_{i})_{i\in I}} of fuzzy sets with index set I (e.g. I = {1,2,3
Fuzzy_set
Index of the value of the U. S. dollar
the index set it apart from several existing metrics, such as the ICE U.S. Dollar Index, Dow Jones FXCM Dollar Index and FTSE Curex USD/G8 Index. The
Wall Street Journal Dollar Index
Wall_Street_Journal_Dollar_Index
1968 studio album by Nico
The Marble Index is the second studio album by the German musician Nico, released in November 1968 on Elektra Records. The avant-garde sound introduced
The_Marble_Index
500 Index, a United States stock market index. Launched by the Standard Statistics Company in 1926 as the successor to its 1923 233-stock weekly index, the
Closing milestones of the S&P 500
Closing_milestones_of_the_S&P_500
Relative weight based on mass and height
Body mass index (BMI) is a value derived from the mass (weight) and height of a person. BMI is calculated as the body mass, in kilograms (kg), divided
Body_mass_index
Branch of mathematics that studies sets
Matthew; Kanamori, Akihiro (eds.), "Handbook of Set Theory", handbook.assafrinot.com, Unofficial index maintained by Assaf Rinot, retrieved 2026-05-12
Set_theory
Finite or infinite ordered list of elements
a set, the order does matter. The notion of a sequence can be generalized to an indexed family, defined as a function from an arbitrary index set. For
Sequence
Axiomatic set theories based on the principles of mathematical constructivism
countability. General unions over a finitely indexed set of finitely indexed sets are again finitely indexed, when at least assuming induction for Σ 1 {\displaystyle
Constructive_set_theory
List of ships with the same or similar names
equipment of the Canadian Coast Guard HMCS Cabot John Cabot (ship) ship index John Cabot (disambiguation) Cabot (disambiguation) Department of Fisheries
CCGS_John_Cabot
Statistical measure of change
living with tools like the Consumer Price Index (CPI). It arises because indices rely on fixed assumptions—like a set basket of goods in the CPI—that may not
Index_(economics)
Subset of a graph's nodes such that all other nodes link to at least one
{Si : i ∈ I}; we assume that U and the index set I are disjoint. Construct a graph G = (V, E) as follows: the set of vertices is V = I ∪ U, there is an
Dominating_set
US total stock market index
The Wilshire 5000 Index (previously the FT Wilshire 5000 Index or Wilshire 5000 Total Market Index), or simply the Wilshire 5000, is a free-float capitalization-weighted
Wilshire_5000
American gambling company
Football Index was a Jersey-licensed and regulated gambling product that allowed customers to gamble on both the future success of football players and
Football_Index
U.S. large cap stock market index
The base price of the index was initially set at 250. In January 1994, in advance of the launch of options trading on the index by the Chicago Board Options
Nasdaq-100
Stock market index
has two sub-indexes: the CSI 100 Index and the CSI 200 Index. Over the years, it has been deemed the Chinese counterpart of the S&P 500 index and a better
CSI_300_Index
Study of computable functions and Turing degrees
index set FIN of the class of all finite sets is on the level Σ2, the index set REC of the class of all recursive sets is on the level Σ3, the index set
Computability_theory
Category whose objects are sets and whose morphisms are functions
the cartesian product of sets. The coproduct is given by the disjoint union: given sets Ai where i ranges over some index set I, we construct the coproduct
Category_of_sets
Set of three bond indices
The JPMorgan Emerging Market Bond Index (EMBI) are a set of three bond indices to track bonds in emerging markets operated by J P Morgan. The indices are
JPMorgan_EMBI
Blue-chip index on the Oslo Stock Exchange
The OBX Index is a stock market index which lists the 25 most liquid companies on the main index of the Oslo Stock Exchange in Norway. All stocks on the
OBX_Index
The Global Food Security Index consists of a set of indices from 113 countries. It measures food security across most of the countries of the world. It
Global_Food_Security_Index
Blue chip stock market index
The DAX (Deutscher Aktienindex (German stock index); German pronunciation: [daks] ) is a stock market index consisting of the 40 major German blue chip
DAX
2011 novel by British author Robert Harris
The Fear Index is a 2011 novel by British author Robert Harris. It is set in a period of roughly 24 hours on 6 May 2010, which was the date of the British
The_Fear_Index
Mathematical set formed from two given sets
More generally still, one can define the Cartesian product of an indexed family of sets. The Cartesian product is named after René Descartes, whose formulation
Cartesian_product
Index of articles associated with the same name
northern Thailand, and possibly China and South Asian countries This set index article includes a list of related items that share the same name (or
Marbled_frog_(disambiguation)
Indexed set in mathematics
with the index i {\displaystyle i} running over some totally ordered index set I {\displaystyle I} , subject to the condition that if i ≤ j {\displaystyle
Filtration_(mathematics)
Italian stock market index
Exchange Group. The all-time closing record for the FTSE MIB Index is 52,432 points, set on June 16, 2026. The following table shows the annual development
FTSE_MIB
South Korean stock market index
market capitalization. The base index of the KOSPI 200 is 100, with the base date set to January 3, 1990. The KOSPI 200 index is rebalanced by the KRX twice
KOSPI_200
Canadian stock market index
The S&P/TSX Composite Index is the benchmark Canadian stock market index representing roughly 70% of the total market capitalization on the Toronto Stock
S&P/TSX_Composite_Index
Singaporean stock market index
FTSE Straits Times Index (abbreviation: STI) is a capitalisation-weighted stock market index that is regarded as the benchmark index for the stock market
Straits_Times_Index
Shanghai Stock Exchange index
50 Index, it must be a constituent of SSE 180 Index, thus SSE 50 is a subindex of SSE 180 Index. SSE 50 Index is also a subset of SSE Composite Index, which
SSE_50_Index
Measure of population differentiation
The fixation index (FST) is a measure of population differentiation due to genetic structure. It is frequently estimated from genetic polymorphism data
Fixation_index
Mathematical construction
Abraham Robinson. The general method for getting ultraproducts uses an index set I , {\displaystyle I,} a structure M i {\displaystyle M_{i}} (assumed
Ultraproduct
Canadian stock market index
60 Index is a stock market index of 60 large companies listed on the Toronto Stock Exchange. Launched on December 30, 1998 by the Canadian S&P Index Committee
S&P/TSX_60
Economic price index
A cost-of-living index is a theoretical price index that measures relative cost of living over time or regions. It is an index that measures differences
Cost-of-living_index
Blue chip stock market index
EURO STOXX 50 is a stock index of Eurozone stocks designed by STOXX, an index provider owned by the Deutsche Börse Group. The index is composed of 50 stocks
EURO_STOXX_50
Set of values which satisfy a given set of equations
sets. More generally, the solution set to an arbitrary collection E of relations (Ei) (i varying in some index set I) for a collection of unknowns ( x
Solution_set
Axiom of set theory
{\displaystyle I} -indexed family ( S i ) i ∈ I {\displaystyle (S_{i})_{i\in I}} of nonempty sets, there exists an I {\displaystyle I} -indexed set ( x i ) i ∈
Axiom_of_choice
Medical diagnostic method
Thyrotroph Thyroid Hormone Sensitivity Index (abbreviated TTSI, also referred to as Thyrotroph T4 Resistance Index or TT4RI) is a calculated structure parameter
Thyrotroph Thyroid Hormone Sensitivity Index
Thyrotroph_Thyroid_Hormone_Sensitivity_Index
stocks that are included in the S&P MidCap 400 (S&P 400) stock market index. The index, maintained by S&P Dow Jones Indices, comprises the common stocks of
List_of_S&P_400_companies
Sign pointing to or indexing an object in its context
indexicality is the phenomenon of a sign pointing to (or indexing) some element in the context in which it occurs. A sign that signifies indexically is
Indexicality
Index of lists with the same name
Seym River, a river in Russia and Ukraine spelled "Sejm" in Polish This set index article is a list of articles associated with the same name (or similar
List of assemblies called Sejm
List_of_assemblies_called_Sejm
New equilibrium price of a commodity
S&P 500 fell 18.9% from February 19, 2025 to April 8, 2025. The stock index set a new all-time high on June 27, 2025—marking the end of the correction
Market_correction
Polish stock market index
in the index. Companies also have different shares in the index, with clear consequences. The all-time high of the index is 3,940.53 points, set during
WIG20
Component of the Human Development Index
The Education Index is a component of the Human Development Index (HDI) published every year by the United Nations Development Programme. Alongside the
Education_Index
Broadly diversified commodity price index
Bloomberg Commodity Index (BCOM) is a broadly diversified commodity price index distributed by Bloomberg Index Services Limited. The index was originally launched
Bloomberg_Commodity_Index
Stock market index
October 1974. After a gradual and volatile recovery since 2009, the index finally set fresh nominal records at the end of 2013, closing at an all-time high
NYSE_Composite
Elements in exactly one of two sets
of sets Boolean function Complement (set theory) Difference (set theory) Exclusive or Fuzzy set Intersection (set theory) Jaccard index List of set identities
Symmetric_difference
families of sets (which cannot be indexed by sets of singletons) will not have cartesian products under this definition. Note further that the sets A i {\displaystyle
Implementation of mathematics in set theory
Implementation_of_mathematics_in_set_theory
INDEX SET
INDEX SET
INDEX SET
INDEX SET
INDEX SET
INDEX SET
INDEX SET
INDEX SET
INDEX SET