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Mathematical formalism
lambda calculus is a formal mathematical system consisting of constructing lambda terms and performing reduction operations on them. The definition of
Lambda_calculus_definition
Mathematical-logic system based on functions
In mathematical logic, the lambda calculus (also written as λ-calculus) is a formal system for expressing computation based on function abstraction and
Lambda_calculus
Logical formalism using combinators instead of variables
computation. Combinatory logic can be viewed as a variant of the lambda calculus, in which lambda expressions (representing functional abstraction) are replaced
Combinatory_logic
Higher-order function Y for which Y f = f (Y f)
the lambda calculus and in functional programming languages, and provide a means to allow for recursive definitions. In the classical untyped lambda calculus
Fixed-point_combinator
Relation specifying a rewrite for each object, compatible with a reduction relation
with the same label, for a slightly different labelled lambda calculus. An alternate definition changes the beta rule to an operation that finds the next
Reduction_strategy
Function definition that is not bound to an identifier
programming, an anonymous function (function literal, lambda function, or block) is a function definition that is not bound to an identifier. Anonymous functions
Anonymous_function
Simple Turing complete logic
these definitions it can be shown that SKI calculus, while being a minimalistic system, can fully perform any computations of the lambda calculus. All
SKI_combinator_calculus
Typed lambda calculus
polymorphic lambda calculus or second-order lambda calculus) is a typed lambda calculus that introduces, to simply typed lambda calculus, a mechanism
System_F
Globalization meta-process
untyped lambda calculus. See also intensional versus extensional equality. The reverse operation to lambda lifting is lambda dropping. Lambda dropping
Lambda_lifting
Framework in lambda calculus
(also written lambda cube) is a framework introduced by Henk Barendregt to investigate the different dimensions in which the calculus of constructions
Lambda_cube
Eleventh letter in the Greek alphabet
the concepts of lambda calculus. λ indicates an eigenvalue in the mathematics of linear algebra. In the physics of particles, lambda indicates the thermal
Lambda
Representation of natural numbers and other data types in lambda calculus
data types in the lambda calculus. In the untyped lambda calculus the only primitive data type are functions, represented by lambda abstraction terms
Church_encoding
Branch of mathematical analysis
applications of fractional calculus expanded greatly over the 19th and 20th centuries, and numerous contributors have given different definitions for fractional derivatives
Fractional_calculus
Expression that cannot be rewritten further
systems of typed lambda calculus including the simply typed lambda calculus, Jean-Yves Girard's System F, and Thierry Coquand's calculus of constructions
Normal form (abstract rewriting)
Normal_form_(abstract_rewriting)
Computer programming language
2023). "Functional Bits: Lambda Calculus based Algorithmic Information Theory" (PDF). tromp.github.io. John's Lambda Calculus and Combinatory Logic Playground
Binary_combinatory_logic
Subset of lambda calculus
computer science, kappa calculus is a formal system for defining first-order functions. Unlike lambda calculus, kappa calculus has no higher-order functions;
Kappa_calculus
Differential calculus on function spaces
The calculus of variations (or variational calculus) is a field of mathematical analysis that uses variations, which are small changes in functions and
Calculus_of_variations
Concept in computer science
recursion. Dana Scott's LCF language was a stage in the evolution of lambda calculus into modern functional languages. This language introduced the let
Let_expression
Tensor index notation for tensor-based calculations
used to be called the absolute differential calculus (the foundation of tensor calculus), tensor calculus or tensor analysis developed by Gregorio Ricci-Curbastro
Ricci_calculus
Branch of mathematics
propositional calculus, Ricci calculus, calculus of variations, lambda calculus, sequent calculus, and process calculus. Furthermore, the term calculus has variously
Calculus
0 {\displaystyle \lambda \to 0} has functions commuting with 1-forms, which is the special case of high school differential calculus. For A = C [ t , t
Quantum_differential_calculus
Church, the λ-calculus is strong enough to describe all mechanically computable functions (see Church–Turing thesis). Lambda-calculus is thus effectively
Computable_topology
Mathematical techniques used in probability theory and related fields
related fields, Malliavin calculus is a set of mathematical techniques and ideas that extend the mathematical field of calculus of variations from deterministic
Malliavin_calculus
Specialized notation for multivariable calculus
In mathematics, matrix calculus is a specialized notation for doing multivariable calculus, especially over spaces of matrices. It collects the various
Matrix_calculus
Mathematical notation in lambda calculus
mathematician Nicolaas Govert de Bruijn for representing terms of lambda calculus without naming the bound variables. Terms written using these indices
De_Bruijn_index
Transforming a function in such a way that it only takes a single argument
functions have exactly one argument. This property is inherited from lambda calculus, where multi-argument functions are usually represented in curried
Currying
Type system used in computer programming and mathematics
Hindley–Milner (HM) type system is a classical type system for the lambda calculus with parametric polymorphism. It is also known as Damas–Milner or
Hindley–Milner_type_system
Type whose definition depends on a value
extensional. In 1934, Haskell Curry noticed that the types used in typed lambda calculus, and in its combinatory logic counterpart, followed the same pattern
Dependent_type
Relationship between programs and proofs
known as lambda calculus. Actually, Howard's first formulation of the isomorphism was referred to (a variant of) Gentzen's sequent calculus. The observation
Curry–Howard_correspondence
standard lambda calculus where substitutions are performed by beta reductions in an implicit manner which is not expressed within the calculus; the "freshness"
Explicit_substitution
Extension of lambda calculus
mathematical logic and computer science, the lambda-mu calculus is an extension of the lambda calculus introduced by Michel Parigot. It introduces two
Lambda-mu_calculus
Matrix of second derivatives
\mathbf {H} (\Lambda )={\begin{bmatrix}{\dfrac {\partial ^{2}\Lambda }{\partial \lambda ^{2}}}&{\dfrac {\partial ^{2}\Lambda }{\partial \lambda \partial \mathbf
Hessian_matrix
Theoretical computer model
where the calculus is extended to numbers and addition (even though both numbers and addition can be encoded entirely in the lambda calculus). Each component
CEK_Machine
Type of category in category theory
of programming, in that their internal language is the simply typed lambda calculus. They are generalized by closed monoidal categories, whose internal
Cartesian_closed_category
Form of continuity for functions
as the fundamental theorem of Lebesgue integral calculus, due to Lebesgue. For an equivalent definition in terms of measures see the section Relation between
Absolute_continuity
Combinatory logic system
the propositional axiom F → A. Combinatory logic SKI combinator calculus Lambda calculus To Mock a Mockingbird Raymond Smullyan (1994) Diagonalization and
B,_C,_K,_W_system
Way to represent data types in the lambda calculus
a way to represent algebraic data types in the lambda calculus, following their syntactic definition without regard whether they are recursive or not
Mogensen–Scott_encoding
Mathematical paradox
language and in various logics, including certain forms of set theory, lambda calculus, and combinatory logic. The paradox is named after the logician Haskell
Curry's_paradox
Certain vector fields are the sum of an irrotational and a solenoidal vector field
the Helmholtz decomposition theorem or the fundamental theorem of vector calculus states that certain differentiable vector fields can be resolved into the
Helmholtz_decomposition
Discrete analog of a derivative
{\Delta _{h}}{h}}(1+\lambda h)^{\frac {x}{h}}={\frac {\Delta _{h}}{h}}e^{\ln(1+\lambda h){\frac {x}{h}}}=\lambda e^{\ln(1+\lambda h){\frac {x}{h}}},} and
Finite_difference
Association of one output to each input
name of type in typed lambda calculus. Most kinds of typed lambda calculi can define fewer functions than untyped lambda calculus. History of the function
Function_(mathematics)
Symbolic description of a mathematical object
the basis for lambda calculus, a formal system used in mathematical logic and programming language theory. The equivalence of two lambda expressions is
Expression_(mathematics)
Extension of propositional modal logic
in the variable Z {\displaystyle Z} , much like in lambda calculus λ Z . ϕ {\displaystyle \lambda Z.\phi } is a function with formula ϕ {\displaystyle
Modal_μ-calculus
Process calculus
In theoretical computer science, the π-calculus (or pi-calculus) is a process calculus. The π-calculus allows channel names to be communicated along the
Π-calculus
and algebraic laws, that is, to the algebraic study of data types. Lambda calculus-based languages (such as Lisp, ISWIM, and Scheme) are in actual practice
Value-level_programming
Instantaneous rate of change of the function
In multivariable calculus, the directional derivative measures the instantaneous rate at which a function changes along a specified vector through a given
Directional_derivative
Graphical model of computation
Interaction nets are at the heart of many implementations of the lambda calculus, such as efficient closed reduction and optimal, in Lévy's sense, Lambdascope
Interaction_nets
Non-commutative algebraic structure
The icosian calculus is a non-commutative algebraic structure discovered by the Irish mathematician William Rowan Hamilton in 1856. In modern terms, he
Icosian_calculus
Computation model defining an abstract machine
(UTM, or simply a universal machine). Another mathematical formalism, lambda calculus, with a similar "universal" nature was introduced by Alonzo Church
Turing_machine
Branch of algebraic geometry
In mathematics, Schubert calculus is a branch of algebraic geometry introduced in the nineteenth century by Hermann Schubert in order to solve various
Schubert_calculus
Unification of discrete and continuous theories of calculus
time-scale calculus is a unification of the theory of difference equations with that of differential equations, unifying integral and differential calculus with
Time-scale_calculus
Mathematical operation
In calculus, the second derivative, or the second-order derivative, of a function f is the derivative of the derivative of f. Informally, the second derivative
Second_derivative
Algebraic manipulation of "true" and "false"
propositional calculus have an equivalent expression in Boolean algebra. Thus, Boolean logic is sometimes used to denote propositional calculus performed
Boolean_algebra
Mathematical theory of data types
conjunction with Alonzo Church's lambda calculus. One notable early example of type theory is Church's simply typed lambda calculus. Church's theory of types
Type_theory
for the simply typed lambda calculus. It has since been extended both to weaker type systems such as the untyped lambda calculus using a domain theoretic
Normalisation_by_evaluation
lexical scope was similar to the lambda calculus. Sussman and Steele decided to try to model Actors in the lambda calculus. They called their modeling system
History of the Scheme programming language
History_of_the_Scheme_programming_language
Function that takes one or more functions as an input or that outputs a function
Functor (disambiguation). In the untyped lambda calculus, all functions are higher-order; in a typed lambda calculus, from which most functional programming
Higher-order_function
Programming paradigm based on applying and composing functions
the lambda calculus and Turing machines are equivalent models of computation, showing that the lambda calculus is Turing complete. Lambda calculus forms
Functional_programming
Computer programming language
Curry's paradox#Lambda calculus — about inconsistency problems caused by combining (propositional) logic and untyped lambda calculus Comparison of Prolog
ΛProlog
Method to solve constrained optimization problems
( x ) + ⟨ λ , g ( x ) ⟩ {\displaystyle {\mathcal {L}}(x,\lambda )\equiv f(x)+\langle \lambda ,g(x)\rangle } for functions f , g {\displaystyle f,g} ;
Lagrange_multiplier
Kind of proof calculus
In logic and proof theory, natural deduction is a kind of proof calculus in which logical reasoning is expressed by inference rules closely related to
Natural_deduction
Basic framework of mathematics
progress was made towards elaborating precise definitions of the basic concepts of infinitesimal calculus, notably the natural and real numbers. This led
Foundations_of_mathematics
Result about when a matrix can be diagonalized
{\displaystyle V_{\lambda }=\{v\in V:Av=\lambda v\}} be the eigenspace corresponding to an eigenvalue λ {\displaystyle \lambda } . Note that the definition does not
Spectral_theorem
Problem in computer science
Church published his proof of the undecidability of a problem in the lambda calculus. Turing's proof was published later, in January 1937. Since then, many
Halting_problem
Thesis on the nature of computability
would disavow Herbrand–Gödel recursion and the λ-calculus in favor of the Turing machine as the definition of "algorithm" or "mechanical procedure" or "formal
Church–Turing_thesis
Hilbert-style deductive systems for propositional logics. Classical propositional calculus is the standard propositional logic. Its intended semantics is bivalent
List of axiomatic systems in logic
List_of_axiomatic_systems_in_logic
Field-equations in general relativity
0,0}^{\rho }+\Gamma _{\rho \lambda }^{\rho }\Gamma _{00}^{\lambda }-\Gamma _{0\lambda }^{\rho }\Gamma _{\rho 0}^{\lambda }.} Our simplifying assumptions
Einstein_field_equations
Calculus of functions generalization
In mathematics, calculus on Euclidean space is a generalization of calculus of functions in one or several variables to calculus of functions on Euclidean
Calculus_on_Euclidean_space
Form of a matrix indicating its eigenvalues and their algebraic multiplicities
functional calculus, a − m = − ( λ − T ) m − 1 e λ ( T ) {\displaystyle a_{-m}=-(\lambda -T)^{m-1}e_{\lambda }(T)} where e λ {\displaystyle e_{\lambda }} is
Jordan_normal_form
Specification of a derivative along a tangent vector of a manifold
\lambda ^{a}} , we have: λ a ; b ≡ ∂ b λ a + Γ a b c λ c {\displaystyle {\lambda ^{a}}_{;b}\equiv \partial _{b}\lambda ^{a}+{\Gamma ^{a}}_{bc}\lambda ^{c}}
Covariant_derivative
programming, an anonymous function (function literal, lambda function, or block) is a function definition that is not bound to an identifier. Anonymous functions
Examples of anonymous functions
Examples_of_anonymous_functions
Type of interpreter in computing
self-evaluator for the λ {\displaystyle \lambda } calculus. The abstract syntax of the λ {\displaystyle \lambda } calculus is implemented as follows in OCaml
Meta-circular_evaluator
Circulation density in a vector field
In vector calculus, the curl, also known as rotor, is a vector operator that describes the infinitesimal circulation of a vector field in three-dimensional
Curl_(mathematics)
Exterior algebraic map taking tensors from p forms to n-p forms
{\displaystyle \lambda >0} , then the induced Hodge stars ⋆ g , ⋆ λ g : Λ n V → Λ n V {\displaystyle {\star }_{g},{\star }_{\lambda g}:\Lambda ^{n}V\to \Lambda ^{n}V}
Hodge_star_operator
Ability of a computing system to simulate Turing machines
contrast with Turing machines. Although (untyped) lambda calculus is Turing-complete, simply typed lambda calculus is not. AI-completeness Algorithmic information
Turing_completeness
Branch of mathematics relating to posets
the lambda calculus, in which a genuine (total) function is associated with each lambda term. Such a model would formalize a link between the lambda calculus
Domain_theory
Type of vector space in math
{\displaystyle f(T)=\int _{\sigma (T)}f(\lambda )\,\mathrm {d} E_{\lambda }\,.} The resulting continuous functional calculus has applications in particular to
Hilbert_space
1943 paper proposing artificial neural networks
"A Logical Calculus of the Ideas Immanent in Nervous Activity" is a 1943 paper written by Warren Sturgis McCulloch and Walter Pitts, published in the journal
A Logical Calculus of the Ideas Immanent in Nervous Activity
A_Logical_Calculus_of_the_Ideas_Immanent_in_Nervous_Activity
Expression denoting a set of sets in formal semantics
write complex functions is the lambda calculus. For example, one can write the meaning of sleeps as the following lambda expression, which is a function
Generalized_quantifier
Mathematical object for the lambda calculus
In the study of denotational semantics of the lambda calculus, Böhm trees, Lévy-Longo trees, and Berarducci trees are (potentially infinite) tree-like
Böhm_tree
Infinite cardinal number
the infinity ( ∞ {\displaystyle \infty } ) commonly found in algebra and calculus, in that the alephs measure the sizes of sets, while infinity is commonly
Aleph_number
c_{\lambda }(x,c_{\mu }(y,z))=c_{\lambda \mu }\left(c_{\frac {\lambda (1-\mu )}{1-\lambda \mu }}(x,y),z\right)} (for λ μ ≠ 1 {\displaystyle \lambda \mu
Convex_space
Components of a mathematical or logical formula
constants like div, power, etc. which are, however, not admitted in pure lambda calculus. Intuitively, the abstraction λx.t denotes a unary function that returns
Term_(logic)
Set of vectors used to define coordinates
V. By definition of a basis, every v in V may be written, in a unique way, as v = λ 1 b 1 + ⋯ + λ n b n , {\displaystyle \mathbf {v} =\lambda _{1}\mathbf
Basis_(linear_algebra)
Various systems of symbolic logic
extended Curry–Howard correspondence between IPC and simply typed lambda calculus. BHK interpretation Computability logic Constructive analysis Constructive
Intuitionistic_logic
Branch of logic
classical logic. It is also called statement logic, sentential calculus, propositional calculus, sentential logic, or sometimes zeroth-order logic. Sometimes
Propositional_logic
Measure of algorithmic complexity
John. "John's Lambda Calculus and Combinatory Logic Playground". Tromp's lambda calculus computer model offers a concrete definition of K()] Universal
Kolmogorov_complexity
Programming style in which control is passed explicitly
the (=& n 0 (lambda (b) (if b ...))) call inside f-aux& definition above would be written instead as (=& n 0 (lambda () (k a)) (lambda () (-& n 1 ..
Continuation-passing_style
Expression that may be integrated over a region
df(x)=f'(x)\,dx} ). This allows expressing the fundamental theorem of calculus, the divergence theorem, Green's theorem, and Stokes' theorem as special
Differential_form
Tensor having both covariant and contravariant indices
vectors Einstein notation Ricci calculus Tensor (intrinsic definition) Two-point tensor D.C. Kay (1988). Tensor Calculus. Schaum’s Outlines, McGraw Hill
Mixed_tensor
Any type of calculation
of a Turing machine. Other (mathematically equivalent) definitions include Alonzo Church's lambda-definability, Herbrand-Gödel-Kleene's general recursiveness
Computation
Symbols for constants, special functions
compensation for the risk borne in investment the α-conversion in lambda calculus the independence number of a graph a placeholder for ordinal numbers
Greek letters used in mathematics, science, and engineering
Greek_letters_used_in_mathematics,_science,_and_engineering
Reasoning about equations with free variables
obtained by matrix multiplication using Boolean arithmetic. An example of calculus of relations arises in erotetics, the theory of questions. In the universe
Algebraic_logic
Technique for creating lexically scoped first class functions
interpreter for extended lambda calculus". "... a data structure containing a lambda expression, and an environment to be used when that lambda expression is applied
Closure (computer programming)
Closure_(computer_programming)
Tensor that describes the 4D geometry of spacetime
\sigma }+\Gamma ^{\rho }{}_{\mu \lambda }\Gamma ^{\lambda }{}_{\nu \sigma }-\Gamma ^{\rho }{}_{\nu \lambda }\Gamma ^{\lambda }{}_{\mu \sigma }.} The curvature
Metric tensor (general relativity)
Metric_tensor_(general_relativity)
Non-contradiction of a theory
propositional calculus was proved by Paul Bernays in 1918[citation needed] and Emil Post in 1921, while the completeness of (first order) predicate calculus was
Consistency
Mathematical logic concept
reads "It is not the case that (R is true and S is false)", which is the definition of a material conditional. We can then make this substitution: R → S {\displaystyle
Contraposition
Dialect of Lisp
evaluation of "closed" Lambda expressions in LISP and ISWIM's Lambda Closures. van Tonder, André (1 January 2004). "A Lambda Calculus for Quantum Computation"
Scheme_(programming_language)
Form of typed lambda calculus
as is the case with the calculus of constructions, but this is not generally the case, e.g. the simply typed lambda calculus allows only terms to depend
Pure_type_system
Mathematical function that can be computed by a program
proposed, the major ones being Turing machines, register machines, lambda calculus and general recursive functions. Although these four are of a very
Computable_function
LAMBDA CALCULUS-DEFINITION
LAMBDA CALCULUS-DEFINITION
Girl/Female
Muslim
Soft to touch
Girl/Female
Indian
Soft to touch
Surname or Lastname
English
English : from Middle English lamb, a nickname for a meek and inoffensive person, or a metonymic occupational name for a keeper of lambs. See also Lamm.English : from a short form of the personal name Lambert.Irish : reduced Anglicized form of Gaelic Ó Luain (see Lane 3). MacLysaght comments: ‘The form Lamb(e), which results from a more than usually absurd pseudo-translation (uan ‘lamb’), is now much more numerous than O’Loan itself.’Possibly also a translation of French agneau.
Girl/Female
Arabic, Indian, Muslim, Pashtun, Sanskrit
Flame; Large; Spacious; Tall; Another Name for Durga and Lakshmi
Girl/Female
Muslim
Dark lipped
Male
Celtic
, Mars, the divinity.
Girl/Female
Indian
Flame
Girl/Female
Muslim
Praiseworthy, Praiser of Allah
Surname or Lastname
English
English : from a pet form of Lamb 1 and 2.English : from an Old Norse personal name Lambi, from lamb ‘lamb’.
Female
Greek
(Λαμία) Greek myth name of an evil spirit who abducts and devours children, LAMIA means "large shark." The name means "vampire" in Latin and "fiend" in Arabic.
Girl/Female
Indian
Dark lipped
Female
Italian
Italian form of English Amber, AMBRA means "amber."
Boy/Male
Hindu
Lord Ganesh, The huge bellied Lord
Surname or Lastname
English
English : habitational name from Lambden in Berwickshire.
Girl/Female
Indian
Ambitious
Female
Spanish
Feminine form of Spanish Amado, AMADA means "beloved."
Girl/Female
Muslim
Ambitious
Girl/Female
Indian
Praiseworthy, Praiser of Allah
Female
Native American
Native American Indian name ALAMEDA means "grove of cottonwood."
Girl/Female
Muslim
Flame
LAMBDA CALCULUS-DEFINITION
LAMBDA CALCULUS-DEFINITION
Boy/Male
Irish Celtic Gaelic Spanish
Intelligent.
Surname or Lastname
English
English : habitational name from any of various places, the chief of which are in Derbyshire, Essex, Hampshire, Shropshire, Staffordshire, Suffolk, Warwickshire, Worcestershire, and East and South Yorkshire. The place name is from Old English beonet ‘bent grass’ + lēah ‘woodland clearing’.Probably an Americanized spelling of Swiss Bandle or Bandli or German Bentele, all short forms of the medieval personal name Pantaleon (see Pantaleo).
Boy/Male
Indian
Fame, Honor, High rank
Girl/Female
Hindu
Pearl
Girl/Female
Tamil
Shlaghya | à®·à¯à®²à®¾à®•à¯à®¯à®¾
Excellent
Boy/Male
British, English
From the Bull Meadow; Meadow of the Sheep
Girl/Female
Tamil
Sarvasuravinasha | ஸரà¯à®µà®¸à¯à®°à®µà®¿à®¨à®¾à®·à®¾
Destroyer of all demons
Boy/Male
Indian, Sanskrit
Merciful as the Light of the Moon
Surname or Lastname
English
English : from Middle English cobel ‘rowboat’, presumably applied as a metonymic occupational name for a maker of such or possibly as a nickname for a sailor.Americanized spelling of German Kobel.
Male
Dutch
, Christ-bearer.
LAMBDA CALCULUS-DEFINITION
LAMBDA CALCULUS-DEFINITION
LAMBDA CALCULUS-DEFINITION
LAMBDA CALCULUS-DEFINITION
LAMBDA CALCULUS-DEFINITION
pl.
of Calculus
n.
The calculus; fluxions.
v. i.
To bring forth a lamb or lambs, as sheep.
n.
A gallstone, or biliary calculus. See Biliary.
a.
Of or pertaining to the center of gravity. See Barycentric calculus, under Calculus.
n.
A calculous concretion, especially one in the kidneys or bladder; the disease arising from a calculus.
a.
Caused, or characterized, by the presence of a calculus or calculi; a, a calculous disorder; affected with gravel or stone; as, a calculous person.
n.
The fruit or berry of the Anamirta Cocculus, a climbing plant of the East Indies. It is a poisonous narcotic and stimulant.
pl.
of Sacculus
n. pl.
See Calculus.
n.
A viola da gamba.
n.
Any solid concretion, formed in any part of the body, but most frequent in the organs that act as reservoirs, and in the passages connected with them; as, biliary calculi; urinary calculi, etc.
pl.
of Cauliculus
n.
A urinary calculus.
imp. & p. p.
of Lamb
n.
The name of the Greek letter /, /, corresponding with the English letter L, l.
n.
A method of computation; any process of reasoning by the use of symbols; any branch of mathematics that may involve calculation.
a.
Of the nature of a calculus; like stone; gritty; as, a calculous concretion.
n.
A concretion, or calculus, formed in the gall bladder or biliary passages. See Calculus, n., 1.
n.
The point of junction of the sagittal and lambdoid sutures of the skull.