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Group in condensed matter physics
The λ (lambda) universality class is a group in condensed matter physics. It regroups several systems possessing strong analogies, namely, superfluids
Lambda_transition
Topologically stable solution of a partial differential equation
needed] of the Wess–Zumino–Witten model. Topological defects in lambda transition universality class[clarification needed] systems including: Screw/edge-dislocations
Topological_defect
Phase transition in the two-dimensional (2-D) XY model
vortex-antivortex pairs. KTHNY theory Goldstone boson Composite fermion Lambda transition Ising model Potts model Topological defect Quantum vortex Superfluid
Berezinskii–Kosterlitz–Thouless transition
Berezinskii–Kosterlitz–Thouless_transition
Topics referred to by the same term
An epsilon transition (also epsilon move or lambda transition) allows an automaton to change its state spontaneously, i.e. without consuming an input symbol
Epsilon_transition
Topics referred to by the same term
Glass transition, the reversible transition in amorphous materials Lambda transition, universality class in condensed matter physics Transition metal
Transition
Physical process of transition between basic states of matter
transition temperature. This is the behavior of liquid helium at the lambda transition from a normal state to the superfluid state, for which experiments
Phase_transition
Topics referred to by the same term
Look up lambda, Lambda, Λ, or λ in Wiktionary, the free dictionary. Lambda (Λ or λ) is the 11th letter of the Greek alphabet. Lambda may also refer to:
Lambda_(disambiguation)
Electrical conductivity with exactly zero resistance
understanding of the phenomenon of superfluidity, because they fall into the lambda transition universality class. The extent to which such generalizations can be
Superconductivity
Eleventh letter in the Greek alphabet
[ˈlamða]), while the spelling λάμβδα (lámbda) was used (to varying degrees) throughout the lengthy transition between the two. In early Greek alphabets
Lambda
State machine that may have infinite states
labelled transition system is a tuple ( S , Λ , T ) {\displaystyle (S,\Lambda ,T)} where S {\displaystyle S} is a set of states, Λ {\displaystyle \Lambda } is
Transition_system
Matrix describing continuous-time Markov chains
has transition-rate matrix Q = ( − λ λ μ − ( μ + λ ) λ μ − ( μ + λ ) λ μ − ( μ + λ ) ⋱ ⋱ ⋱ ) . {\displaystyle Q={\begin{pmatrix}-\lambda &\lambda \\\mu
Transition-rate_matrix
Proposed superconducting material
during the proposed synthesis, which can produce resistance drops, lambda transition in heat capacity, and magnetic response in small samples. After the
LK-99
Superfluid transition temperature of helium-4
The lambda point is the temperature at which normal fluid helium (helium I) makes the transition to superfluid state (helium II). At pressure of 1 atmosphere
Lambda_point
Chemical compound
solution is typically used to quench reaction mixtures. It has a lambda transition at 242.8 K and zero pressure. Giant squid and some other large squid
Ammonium_chloride
Formal constraint in quantum mechanics
multipole transitions π ( E λ ) = π i π f = ( − 1 ) λ , {\displaystyle \pi (\mathrm {E} \lambda )=\pi _{\text{i}}\pi _{\text{f}}=(-1)^{\lambda },} while
Selection_rule
Changing gender presentation to accord with gender identity
Gender transition is the process of affirming and expressing internal sense of gender, rather than the sex assigned at birth. It is a recommended course
Gender_transition
Random process independent of past history
3 | ≥ ⋯ ≥ | λ n | . {\displaystyle 1=|\lambda _{1}|>|\lambda _{2}|\geq |\lambda _{3}|\geq \cdots \geq |\lambda _{n}|.} Since P is a row stochastic matrix
Markov_chain
Toy model for electronic localization
localization transition happens at the critical value of λ {\displaystyle \lambda } which separates these two behaviors, λ = 2 J {\displaystyle \lambda =2J}
Aubry–André_model
Russian theoretical physicist (1933–2022)
liquids, specifically for his studies of fluctuations close to the lambda transition and of elementary excitations and vorticity in a superfluid, which
Lev_Pitaevskii
Parameter describing physics near critical points
measured value of α is −0.0127(3) for the phase transition of superfluid helium (the so-called lambda transition). The value was measured on a space shuttle
Critical_exponent
Concepts from linear algebra
\det(A-\lambda I)=(\lambda _{1}-\lambda )^{\mu _{A}(\lambda _{1})}(\lambda _{2}-\lambda )^{\mu _{A}(\lambda _{2})}\cdots (\lambda _{d}-\lambda )^{\mu _{A}(\lambda
Eigenvalues_and_eigenvectors
Chemical data page
1249772 g/cm3 (He-I at boiling point: 4.222 K) 0.1461087 g/cm3 (at lambda transition He-I/He-II: 2.1768 K, saturated vapor pressure) 0.1451397 g/cm3 (He-II
Densities of the elements (data page)
Densities_of_the_elements_(data_page)
Annual awards for LGBTQ+ literature
Lambda Literary Awards, also known as the "Lammys", are awarded yearly by Lambda Literary to recognize the role LGBTQ+ writers play in shaping the world
Lambda_Literary_Awards
Relation between transition systems in computer science
state transition system (S, Λ, →), where S is a set of states, Λ {\displaystyle \Lambda } is a set of labels and → is a set of labelled transitions (i.e
Bisimulation
American Latino interest collegiate fraternity
La Unidad Latina, Lambda Upsilon Lambda Fraternity, Inc. (ΛΥΛ or LUL) is a Latino and multicultural interest collegiate fraternity. It was founded at
Lambda_Upsilon_Lambda
Memoryless continuous-time stochastic process that shows two distinct values
_{t}P(c_{2},t|x,t_{0})=\lambda _{1}P(c_{1},t|x,t_{0})-\lambda _{2}P(c_{2},t|x,t_{0}).} where λ 1 {\displaystyle \lambda _{1}} is the transition rate for going
Telegraph_process
Mathematical model of the Big Bang
The Lambda-CDM, Lambda cold dark matter, or ΛCDM model is the standard form of the Big Bang theory of cosmology governing the chronology of the universe
Lambda-CDM_model
Theory in physical chemistry
a theory in physical chemistry describing the intensity of electron transitions within the 4f shell of rare-earth ions in solids and solutions. It provides
Judd–Ofelt_theory
Features that do not change if length or energy scales are multiplied by a common factor
{\displaystyle \lambda \mathbf {u} (\lambda \mathbf {x} ,\lambda ^{2}t)} and λ ρ ( λ x , λ 2 t ) {\displaystyle \lambda \rho (\lambda \mathbf {x} ,\lambda ^{2}t)}
Scale_invariance
Bacteriophage that infects Escherichia coli
Lambda phage, also known as λ phage, (coliphage λ, scientific name Lambdavirus lambda) is a bacterial virus, or bacteriophage, that infects the bacterial
Lambda_phage
For-profit online coding bootcamp
providing for-profit massive online course. Launched in 2017 under the name Lambda School, it gained attention for being a coding bootcamp that offered income
Bloom_Institute_of_Technology
Relation between state transition systems in computer science
state transition system ( S {\displaystyle S} , Λ {\displaystyle \Lambda } , →), where S {\displaystyle S} is a set of states, Λ {\displaystyle \Lambda }
Simulation_(computer_science)
Mechanism in physical cosmology
the transition. Consider a system that undergoes a continuous phase transition at the critical value λ = λ c = 0 {\displaystyle \lambda =\lambda _{c}=0}
Kibble–Zurek_mechanism
Stochastic process
}R_{\lambda }=(R_{\mu }-R_{\lambda })/(\lambda -\mu ).} Furthermore, for any fixed λ > 0 {\textstyle \lambda >0} , the image of R λ {\textstyle R_{\lambda
Feller_process
Mathematical constant
H_{\lambda }} by the backward heat equation in the variable z {\displaystyle z} . In this interpretation, the de Bruijn–Newman constant is the transition
De_Bruijn–Newman_constant
\lambda } . Intensity from state 1 to state 2 is λ {\displaystyle \lambda } . Transitions from state 2 to state 1 and state 1 to state 0 represent the repairs
Dependability_state_model
Statistical model in quantum mechanics of magnetic materials
\left({\frac {\lambda _{k}+is}{\lambda _{k}-is}}\right)^{N}=\prod _{j\neq k}{\frac {\lambda _{k}-\lambda _{j}+i}{\lambda _{k}-\lambda _{j}-i}}.} For spin
Quantum_Heisenberg_model
Potential arising from loop effects
{1}{4}}(F_{\mu \nu })^{2}+|D_{\mu }\phi |^{2}-m^{2}|\phi |^{2}-{\frac {\lambda }{6}}|\phi |^{4}} where the scalar field is complex, F μ ν = ∂ μ A ν − ∂
Coleman–Weinberg_potential
2026 awards ceremony for LGBTQ+ literature
The 38th Lambda Literary Awards honor works of LGBTQ+ literature published in 2025. Finalists were announced on March 18, 2026, and winners were announced
38th_Lambda_Literary_Awards
Liquid state of the element helium
bottle) at 4.2 K (−268.95 °C) and 1 bar (15 psi) boiling slowly. Lambda point transition: as the liquid is cooled down through 2.17 K (−270.98 °C), the
Liquid_helium
American author
Locus included The Transition on their 2025 list of recommended reading for young adults. The novel is a finalist for the 2026 Lambda Literary Award for
Logan-Ashley_Kisner
American collegiate Latino fraternity
Lambda Theta Phi Latin Fraternity, Inc. (ΛΘΦ) is a Latino non-profit social fraternity in the United States with 148 undergraduate chapters and 33 alumni
Lambda_Theta_Phi
Theoretical model of computation
the lambda-calculus. Moreover, the Krivine machine is deterministic, since each pattern of the state corresponds to at most one machine transition. The
Krivine_machine
λ , k {\displaystyle \rho _{\lambda \lambda }^{0}={\frac {1}{e^{(\varepsilon _{\lambda ,k}-\mu )\beta }+1}}=f_{\lambda ,k}} This is the Fermi–Dirac distribution
Free_carrier_absorption
Implementation of the renormalization group
}{\partial \Lambda }}{{V}_{\Lambda }}(\psi )=-{{\dot {\Delta }}_{G_{0,\Lambda }}}{{V}_{\Lambda }}(\psi )+\Delta _{{\dot {G}}_{0,\Lambda }}^{12}{\mathcal
Functional renormalization group
Functional_renormalization_group
Abrupt change in a quantum particle's angular momentum
quantum number are J = Λ , Λ + 1 , Λ + 2 , … {\displaystyle J=\Lambda ,\Lambda +1,\Lambda +2,\dots } Thus molecular wave function Ψs is simultaneous eigenfunction
Rotational_transition
Conglomeration of discrete solid, macroscopic particles
{\displaystyle \lambda g(\lambda )=\int _{0}^{\lambda }g^{2}(\delta )d\delta \Rightarrow \lambda g'(\lambda )+g(\lambda )=g^{2}(\lambda )\Rightarrow g(\lambda )={\dfrac
Granular_material
Machine whose output is determined by its state and inputs
\Sigma } a finite set called the output alphabet Λ {\displaystyle \Lambda } a transition function T : S × Σ → S {\displaystyle T:S\times \Sigma \rightarrow
Mealy_machine
Periodic set of points
group Λ ≅ Z n {\displaystyle \Lambda \cong \mathbb {Z} ^{n}} , meaning M ′ = A M {\displaystyle M'=AM} for an integer transition matrix A ∈ G L n ( Z ) {\displaystyle
Lattice_(group)
Mathematical function having a characteristic S-shaped curve or sigmoid curve
Derivation from lambda (bell-shaped) functions M12: Integration of lambda (bell-shaped) function M13: Integration of the sum of lambda (bell-shaped) functions
Sigmoid_function
Resolving power of a spectrograph
\Delta \lambda } , and is closely related to the resolving power of the spectrograph, defined as R = λ Δ λ , {\displaystyle R={\frac {\lambda }{\Delta
Spectral_resolution
Vortex of supercurrent in a film of type-II superconductor
{\displaystyle \lambda } , in a thin film this is increased to the Pearl length Λ P = 2 λ 2 / d {\displaystyle \Lambda _{P}=2\lambda ^{2}/d} . This occurs
Pearl_vortex
2019 nonfiction book by Lou Sullivan
himself on with every entry he writes." We Both Laughed in Pleasure won the Lambda Literary Award for Transgender Nonfiction in 2020. Mac, Amos (September
We_Both_Laughed_in_Pleasure
Type of stochastic process
given via so-called transition rates c Λ ( η , ξ ) > 0 {\displaystyle c_{\Lambda }(\eta ,\xi )>0} where Λ ⊂ G {\displaystyle \Lambda \subset G} is a finite
Interacting_particle_system
Form of a matrix indicating its eigenvalues and their algebraic multiplicities
{red}\ulcorner }\lambda _{1}&1&{\color {red}\urcorner }\\&\lambda _{1}&1\,\,\,\,\,\\{\color {red}\llcorner }&&\lambda _{1}{\color {red}\lrcorner
Jordan_normal_form
2023 novel by Nicola Dinan
won the 2024 Polari First Book Prize and was a finalist for that year's Lambda Literary Award for Transgender Fiction. Its audiobook edition was narrated
Bellies
Ruled surface over the projective line
n t 1 ) {\displaystyle \lambda \cdot (l_{0},l_{1},t_{0},t_{1})=(\lambda l_{0},\lambda l_{1},\lambda ^{0}t_{0}=t_{0},\lambda ^{-n}t_{1})} Then, the projectivization
Hirzebruch_surface
Formula for spectral line wavelengths in alkali metals
energy of the atomic electron transition is given by 1 λ v a c = R H ( 1 n 1 2 − 1 n 2 2 ) , {\displaystyle {\frac {1}{\lambda _{\mathrm {vac} }}}=R_{\text{H}}\left({\frac
Rydberg_formula
Mathematical functions which are smooth but not analytic
x ∈ R . {\displaystyle f_{n}(x)={\frac {\alpha _{n}}{n!\,\lambda _{n}^{n}}}\psi _{n}(\lambda _{n}x),\qquad n\in \mathbb {N} _{0},\;x\in \mathbb {R} .}
Non-analytic_smooth_function
Matrices similar to diagonal matrices
AP=P{\begin{bmatrix}\lambda _{1}&0&\cdots &0\\0&\lambda _{2}&\cdots &0\\\vdots &\vdots &\ddots &\vdots \\0&0&\cdots &\lambda _{n}\end{bmatrix}}.} The transition matrix
Diagonalizable_matrix
Distance over which a wave's shape repeats
spatial frequency. Wavelength is commonly designated by the Greek letter lambda (λ). For a modulated wave, wavelength may refer to the carrier wavelength
Wavelength
Study of abstract machines and automata
the output function λ ( q i − 1 , a i ) {\displaystyle \lambda (q_{i-1},a_{i})} . The transition function δ {\displaystyle \delta } is extended inductively
Automata_theory
Award for transgender literature
The Lambda Literary Award for Transgender Literature is an annual literary award, presented by the Lambda Literary Foundation, that awards works of transgender
Lambda Literary Award for Transgender Literature
Lambda_Literary_Award_for_Transgender_Literature
Multi-server queueing model
Q={\begin{pmatrix}-\lambda &\lambda \\\mu &-(\mu +\lambda )&\lambda \\&2\mu &-(2\mu +\lambda )&\lambda \\&&3\mu &-(3\mu +\lambda )&\lambda \\&&&&\ddots \\&&&&c\mu
M/M/c_queue
Physical quantity of ideal and quantum gases
Broglie wavelength ( λ th {\displaystyle \lambda _{\text{th}}} , sometimes also denoted by Λ {\displaystyle \Lambda } ) is a measure of the uncertainty in
Thermal_de_Broglie_wavelength
Mathematical model of ferromagnetism in statistical mechanics
)=\operatorname {Tr} \left(V^{L}\right)=\lambda _{1}^{L}+\lambda _{2}^{L}=\lambda _{1}^{L}\left[1+\left({\frac {\lambda _{2}}{\lambda _{1}}}\right)^{L}\right],} where
Ising_model
Health care of transgender individuals
transgender health care is gender-affirming care, the medical aspect of gender transition. Questions implicated in transgender health care include gender variance
Transgender_health_care
Coordinate system that is defined by points instead of vectors
_{2}y_{2}+\lambda _{3}y_{3}+(1-\lambda _{1}-\lambda _{2}-\lambda _{3})y_{4}\\z&=\lambda _{1}z_{1}+\,\lambda _{2}z_{2}+\lambda _{3}z_{3}+(1-\lambda _{1}-\lambda _{2}-\lambda
Barycentric_coordinate_system
Finite-state machine whose output values are determined only by its current state
\Sigma } A finite set called the output alphabet Λ {\displaystyle \Lambda } A transition function δ : S × Σ → S {\displaystyle \delta :S\times \Sigma \rightarrow
Moore_machine
Spectroscopic technique
, {\displaystyle \Delta {\tilde {\nu }}=\left({\frac {1}{\lambda _{0}}}-{\frac {1}{\lambda _{1}}}\right)\ ,} where Δν̃ is the Raman shift expressed in
Raman_spectroscopy
Equation in polymer science
{\displaystyle {T_{g}}={\frac {1}{\alpha _{T}}}(1-C-\phi _{c}^{*}+2\Lambda )-{\frac {2\Lambda M_{0}}{\alpha _{T}M_{n}}}} In this equation, ϕ c ∗ {\displaystyle
Flory–Fox_equation
Special type of continuous-time Markov process
t ) {\displaystyle 1-\lambda _{k}\Delta t-\mu _{k}\Delta t+o(\Delta t)} . For a population process, "birth" is the transition towards increasing the
Birth–death_process
American LGBT civil rights organization
The Lambda Legal Defense and Education Fund, better known as Lambda Legal, is an American civil rights organization that focuses on lesbian, gay, bisexual
Lambda_Legal
Type of queue model in queueing theory
with transition rate matrix Q = ( − λ λ μ − ( μ + λ ) λ μ − ( μ + λ ) λ μ − ( μ + λ ) λ ⋱ ) {\displaystyle Q={\begin{pmatrix}-\lambda &\lambda \\\mu
M/M/1_queue
Expulsion of a magnetic field from a superconductor
is the expulsion of a magnetic field from a superconductor during its transition to the superconducting state when it is cooled below the critical temperature
Meissner_effect
Type of fiber bundle
&=dx^{\lambda }\otimes \left(\partial _{\lambda }+\Gamma _{\lambda }^{i}\partial _{i}\right)\,,\\\Gamma _{\lambda }^{i}&={{\Gamma _{\lambda }}^{i}}_{j}\left(x^{\nu
Affine_bundle
Concept in survival analysis
) = S ( t a − 1 | χ ) − S ( t a | χ ) S ( t a − 1 | χ ) {\displaystyle \lambda _{d}(t_{a}|\chi )=Pr(t_{a-1}\leqslant T<t_{a}|T\geqslant t_{a-1},x[t_{a-1}])={\frac
Discrete-time proportional hazards
Discrete-time_proportional_hazards
American literary award for LGBT children's books
The Lambda Literary Awards (also known as the "Lammys") are awarded yearly by the US-based Lambda Literary Foundation to published works that celebrate
Lambda Literary Award for Children's and Young Adult Literature
Lambda_Literary_Award_for_Children's_and_Young_Adult_Literature
Concept in theoretical physics
\left(-S_{\Lambda '}[\varphi ]\right)\ {\stackrel {\mathrm {def} }{=}}\ \int _{\Lambda '\leq p\leq \Lambda }{\mathcal {D}}\varphi \exp \left[-S_{\Lambda }[\varphi
Renormalization_group
American Latino collegiate fraternity
of 1987, the organization adopted the Greek letters of Lambda Sigma Upsilon and transitioned from a Latino social fellowship to a fraternity in order
Lambda_Sigma_Upsilon
Lamb–Oseen vortex Lamb shift Lamb waves Lambda-CDM model Lambda baryon Lambda point refrigerator Lambda point Lambda transition Lambdavacuum solution Lambert's
Index_of_physics_articles_(L)
{\displaystyle \Lambda } equal to zero. Ω {\displaystyle {\boldsymbol {\Omega }}} defines a vector of magnitude Ω = Λ + Σ {\displaystyle \Omega =\Lambda +\Sigma
Hund's_cases
Highly viscous liquid exhibiting a kind of semi-solid behavior
f_{\text{gel}}(\lambda _{1},\lambda _{2},\lambda _{3})=f_{\text{net}}(\lambda _{1},\lambda _{2},\lambda _{3})+f_{\text{mix}}(\lambda _{1},\lambda _{2},\lambda _{3})
Gel
1996 book by Loren Cameron
reported in the mainstream press. Body Alchemy received two Lambda Literary Awards in 1996. The Lambda Literary Awards, or "Lammys," are an American award for
Body_Alchemy
Construct for Hermitian matrices
≥ λ n = λ min {\displaystyle \lambda _{\text{max}}=\lambda _{1}\geq \lambda _{2}\geq \cdots \geq \lambda _{n}=\lambda _{\text{min}}} be the eigenvalues
Rayleigh_quotient
American writer and activist (born c.1979)
in the American Revolutionary War. The book was a finalist for the 2015 Lambda Literary Award for Transgender Fiction. Released in 2019, his novel Continental
Alex_Myers
Self-adjoint operator that arises in physical transition problems
be used to study metal to insulator transitions like in the Aubry–André model. For λ = 1 {\displaystyle \lambda =1} , the almost Mathieu operator is
Almost_Mathieu_operator
Explanation for the rates of electron transfer reactions
electron may jump. The energy of this transition state is the inner sphere reorganization energy λ in {\displaystyle \lambda _{\text{in}}} . For the self-exchange
Marcus_theory
Hypothetical field that may have driven cosmic inflation
three phases: Expanding vacuum state with high potential energy Phase transition to true vacuum Slow roll and reheating A "vacuum" or "vacuum state" in
Inflaton
State of matter
/ λ ) sin θ {\displaystyle q=(4\pi /\lambda )\sin \theta } given by the wavelength λ {\displaystyle \lambda } of the probe (photon or neutron) and the
Liquid
Full-size executive car produced by Kia (2009-2021)
4L Theta II MPI engine, 2.7L Mu MPI engine, 2.7L Mu LPI engine, and 3.5L Lambda II MPI engine, with a 6-speed automatic transmission as the gearbox. The
Kia_Cadenza
Forms which matter can take
helium-4, the most common isotope of helium, forms a superfluid below the lambda temperature of 2.17 K (−270.98 °C; −455.76 °F). The state is described as
State_of_matter
Algebraic operation
lambda A_{11}&\lambda A_{12}&\cdots &\lambda A_{1m}\\\lambda A_{21}&\lambda A_{22}&\cdots &\lambda A_{2m}\\\vdots &\vdots &\ddots &\vdots \\\lambda A_{n1}&\lambda
Scalar_multiplication
2022 novel by Maya Deane
was shortlisted for the 2023 Crawford Award and a finalist for the 2023 Lambda Literary Award for Transgender Fiction. In the novel, Achilles is living
Wrath_Goddess_Sing
Technique in information theory
{\displaystyle \Omega =U\Lambda V^{T}{\text{ with }}\Lambda =\operatorname {Diag} {\big (}\lambda _{1}\leq \lambda _{2}\cdots \lambda _{N}{\big )}\,} and the
Information_bottleneck_method
Flags and symbols used by the LGBTQ community
In 1970, graphic designer Tom Doerr selected the lower-case Greek letter lambda (λ) to be the symbol of the New York chapter of the Gay Activists Alliance
LGBTQ_symbols
Symbols for constants, special functions
of the 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
Hydrogen spectral series
needed] λ = B ( m 2 m 2 − n 2 ) = B ( m 2 m 2 − 2 2 ) {\displaystyle \lambda \ =B\left({\frac {m^{2}}{m^{2}-n^{2}}}\right)=B\left({\frac {m^{2}}{m^{2}-2^{2}}}\right)}
Balmer_series
λ n {\displaystyle \lambda _{1}\geq \lambda _{2}\geq \cdots \geq \lambda _{n}} . It is known that λ 1 = 1 {\displaystyle \lambda _{1}=1} . The Cheeger
Cheeger_bound
Singularities in the parameter space
parameters approach the quantum phase transition point. lim λ → λ Q C P R e χ F = ∞ {\displaystyle \lim _{\lambda \to \lambda _{\mathrm {QCP} }}\mathbb {Re}
Exceptional_point
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LAMBDA TRANSITION
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LAMBDA TRANSITION
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LAMBDA TRANSITION
LAMBDA TRANSITION
LAMBDA TRANSITION
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