Search references for ISOLATED SINGULARITY. Phrases containing ISOLATED SINGULARITY
See searches and references containing ISOLATED SINGULARITY!ISOLATED SINGULARITY
Has no other singularities close to it
complex analysis, a branch of mathematics, an isolated singularity is one that has no other singularities close to it. In other words, a complex number
Isolated_singularity
Point where a mathematical object behaves irregularly
(mathematics) Hyperbolic growth Movable singularity Pathological (mathematics) Regular singularity Singular solution "Singularities, Zeros, and Poles". mathfaculty
Singularity_(mathematics)
Location around which a function displays irregular behavior
essential singularity of a function is a "severe" singularity near which the function exhibits striking behavior. The category essential singularity is a "left-over"
Essential_singularity
Attribute of a mathematical function
The residue of a meromorphic function f {\displaystyle f} at an isolated singularity a {\displaystyle a} , often denoted Res ( f , a ) {\displaystyle
Residue_(complex_analysis)
Undefined point on a holomorphic function which can be made regular
rigid that their isolated singularities can be completely classified. A holomorphic function's singularity is either not really a singularity at all, i.e.
Removable_singularity
Mathematical concept describing isolated singularity of an algebraic surface
a Du Val singularity, also called simple surface singularity, Kleinian singularity, or rational double point, is an isolated singularity of a complex
Du_Val_singularity
Concept of complex analysis
it can be made to contain only the singularity of c {\displaystyle c} due to nature of isolated singularities. This may be used for calculation in
Residue_theorem
Branch of mathematics studying functions of a complex variable
is applicable (see methods of contour integration). A "pole" (or isolated singularity) of a function is a point where the function's value becomes unbounded
Complex_analysis
Concept in complex analysis
certain type of singularity of a complex-valued function of a complex variable. It is the simplest type of non-removable singularity of such a function
Zeros_and_poles
Theorem about the range of an analytic function
Picard's Theorem: If an analytic function f {\textstyle f} has an essential singularity at a point w {\textstyle w} , then on any punctured neighborhood of w
Picard_theorem
Mathematical theory
mathematical singularity as a value at which a function is not defined. For that, see for example isolated singularity, essential singularity, removable
Singularity_theory
Theorem in complex analysis
Basic theory Argument principle Residue Essential singularity Isolated singularity Removable singularity Zeros and poles Complex functions Complex-valued
Cauchy's_integral_theorem
Number of times a curve wraps around a point in the plane
Basic theory Argument principle Residue Essential singularity Isolated singularity Removable singularity Zeros and poles Complex functions Complex-valued
Winding_number
Power series with negative powers
f(x)} for all x ∈ C {\displaystyle x\in \mathbb {C} } except at the singularity x = 0 {\displaystyle x=0} . The graph on the right shows f ( x ) {\displaystyle
Laurent_series
Mathematical theorem in complex analysis
|f(z)|} can only have a local minimum (which necessarily has value 0) at an isolated zero of f ( z ) {\displaystyle f(z)} . Another proof works by using Gauss's
Maximum_modulus_principle
Class of mathematical function
{\displaystyle z=0} is an accumulation point of poles and is thus not an isolated singularity. The function f ( z ) = sin 1 z {\displaystyle f(z)=\sin {\frac
Meromorphic_function
Theorem about zeros of holomorphic functions
Basic theory Argument principle Residue Essential singularity Isolated singularity Removable singularity Zeros and poles Complex functions Complex-valued
Rouché's_theorem
Experimental operating system from Microsoft Research
Team (video & thread). Singularity IV: Return of the UI, a demo of Singularity actually running (video & thread). Singularity Revisited, an interview
Singularity (operating system)
Singularity_(operating_system)
}z^{n}={\frac {1}{1-z}}} with a singularity at z = 1 {\displaystyle z=1} . The example of the geometric series gives an isolated singularity. An example of a series
Vivanti–Pringsheim_theorem
Phenomenon within general relativity
curvature singularity at the Cauchy horizon known as the mass-inflation singularity, the Cauchy horizon singularity, the infalling singularity, or the "fat
Mass_inflation
Mathematical function that preserves angles
often used to try to make models amenable to extension beyond curvature singularities, for example to permit description of the universe even before the Big
Conformal_map
Statement in complex analysis
Basic theory Argument principle Residue Essential singularity Isolated singularity Removable singularity Zeros and poles Complex functions Complex-valued
Schwarz_lemma
Type of function in mathematics
{\displaystyle 1} , because the nearest singularity is at z = − 1 {\displaystyle z=-1} . Complex singularities can determine the radius of convergence
Analytic_function
Concept in algebraic geometry
it does not is given by the isolated singularity of x2 + y3z + z3 = 0 at the origin. Blowing it up gives the singularity x2 + y2z + yz3 = 0. It is not
Resolution_of_singularities
Second-order partial differential equation
only valid locally, or provided that the path does not loop around a singularity. For example, if r and θ are polar coordinates and φ = log r , {\displaystyle
Laplace's_equation
Theorem in complex analysis
z-z_{Z}}+{g'(z) \over g(z)}.} Since g(zZ) ≠ 0, it follows that g' (z)/g(z) has no singularities at zZ, and thus is analytic at zZ, which implies that the residue of
Argument_principle
Complex-differentiable (mathematical) function
a meromorphic function (defined to mean holomorphic except at certain isolated poles), resembles a rational fraction ("part") of entire functions in a
Holomorphic_function
Provides integral formulas for all derivatives of a holomorphic function
. This is analytic (since the contour does not contain the other singularity). We can simplify f 1 {\displaystyle f_{1}} to be: f 1 ( z ) = z 2 z
Cauchy's_integral_formula
Method for assigning values to integrals
a singularity on an integral interval is avoided by limiting the integral interval to the non singular domain. Depending on the type of singularity in
Cauchy_principal_value
Functions in mathematics
harmonic function with the same singularity, so in this case the harmonic function is not determined by its singularities; however, we can make the solution
Harmonic_function
Theorem in complex analysis
h} is bounded and all the zeroes of g {\displaystyle g} are isolated, any singularities must be removable. Thus h {\displaystyle h} can be extended to
Liouville's theorem (complex analysis)
Liouville's_theorem_(complex_analysis)
(complex analysis) Residue (complex analysis) Isolated singularity Removable singularity Essential singularity Branch point Principal branch Weierstrass–Casorati
List of complex analysis topics
List_of_complex_analysis_topics
Singularities of holomorphic functions extend infinitely outward
some direction. More precisely, it shows that an isolated singularity is always a removable singularity for any analytic function of n > 1 complex variables
Hartogs's_extension_theorem
Mathematical theorem
punctured neighborhood of z = 0. Hence it is an isolated singularity, as well as being an essential singularity. Using a change of variable to polar coordinates
Casorati–Weierstrass_theorem
Study of systems of inequalitites
n {\displaystyle S^{n}} is the link of a real algebraic set with isolated singularity in R n + 1 {\displaystyle \mathbb {R} ^{n+1}} 1981 Akbulut and King
Real_algebraic_geometry
series (see Borel summation) and treats analytic functions with isolated singularities. He introduced the term in the late 1970s. Resurgent functions have
Resurgent_function
Characteristic property of holomorphic functions
Basic theory Argument principle Residue Essential singularity Isolated singularity Removable singularity Zeros and poles Complex functions Complex-valued
Cauchy–Riemann_equations
Integral criterion for holomorphy
Basic theory Argument principle Residue Essential singularity Isolated singularity Removable singularity Zeros and poles Complex functions Complex-valued
Morera's_theorem
Theorem on holomorphic functions
is non-constant and holomorphic. The roots of g {\displaystyle g} are isolated by the identity theorem, and by further decreasing the radius of the disk
Open mapping theorem (complex analysis)
Open_mapping_theorem_(complex_analysis)
Awareness of facts
as explicit memory and can be learned through rote memorization of isolated, singular, facts. But in many cases, it is advantageous to foster a deeper understanding
Declarative_knowledge
Concept in complex analysis
Basic theory Argument principle Residue Essential singularity Isolated singularity Removable singularity Zeros and poles Complex functions Complex-valued
Antiderivative (complex analysis)
Antiderivative_(complex_analysis)
related notion in algebraic geometry is the Milnor fiber of an isolated hypersurface singularity. This has a similar setup, where a polynomial f {\displaystyle
Milnor_map
Geometric representation of the complex numbers
convenience, because the points at which the infinite sum is undefined are isolated, and the cut plane can be replaced with a suitably punctured plane. In
Complex_plane
Theorem
center a {\displaystyle a} to the nearest non-removable singularity; if there are no singularities (i.e., if f {\displaystyle f} is an entire function),
Analyticity of holomorphic functions
Analyticity_of_holomorphic_functions
Study of mathematical knots
{\displaystyle \mathbb {S} ^{n}} is the link of a real-algebraic set with isolated singularity in R n + 1 {\displaystyle \mathbb {R} ^{n+1}} (Akbulut & King 1981)
Knot_theory
Concept in Nielsen theory
{\displaystyle g(x)={\frac {x-f(x)}{||x-f(x)||}}.} Then g has an isolated singularity at x0, and maps the boundary of some deleted neighborhood of x0 to
Fixed-point_index
Assignment of a vector to each point in a subset of Euclidean space
behaviour around an isolated zero (i.e., an isolated singularity of the field). In the plane, the index takes the value −1 at a saddle singularity but +1 at a
Vector_field
Mathematical theorem
univalent. If the limit function is non-zero, then its zeros have to be isolated. Zeros with multiplicities can be counted by the winding number 1 2 π i
Riemann_mapping_theorem
Infinite sum that is considered independently from any notion of convergence
Basic theory Argument principle Residue Essential singularity Isolated singularity Removable singularity Zeros and poles Complex functions Complex-valued
Formal_power_series
Branch of mathematics
Nebojsa; Shinder, Evgeny (2021). "K-theory and the singularity category of quotient singularities". Annals of K-Theory. 6 (3): 381–424. arXiv:1809.10919
K-theory
General relativity model near spacetime singularities
relativity has a page on the topic of: BKL singularity A Belinski–Khalatnikov–Lifshitz (BKL) singularity is a model of the dynamic evolution of the universe
BKL_singularity
Val singularities. Elliptic singularity (Kollár & Mori 1998, Theorem 5.22.) (Artin 1966) Artin, Michael (1966), "On isolated rational singularities of
Rational_singularity
Invariant that plays a role in algebraic geometry and singularity theory
hypersurface singularity. Assume it is an isolated singularity: in the case of holomorphic mappings it is said that a hypersurface singularity f {\displaystyle
Milnor_number
Finnish mathematician (born 1955)
thesis The Intersection Homology D-module on Hypersurfaces with Isolated Singularities. From 1983 to 1986 was a C. L. E. Moore instructor at the Massachusetts
Kari_Vilonen
Computes the Poincaré–Hopf index of a real, analytic vector field at a singularity
Poincaré–Hopf index of a real, analytic vector field at an algebraically isolated singularity. It is named after David Eisenbud, Harold I. Levine, and George Khimshiashvili
Eisenbud–Levine–Khimshiashvili signature formula
Eisenbud–Levine–Khimshiashvili_signature_formula
Knot which lies on the surface of a torus in 3-dimensional space
of an isolated complex hypersurface singularity. One intersects the complex hypersurface with a hypersphere, centred at the isolated singular point,
Torus_knot
Frobenius manifolds come from the singularity theory. Namely, the space of miniversal deformations of an isolated singularity has a Frobenius manifold structure
Frobenius_manifold
Theorem in complex analysis
Basic theory Argument principle Residue Essential singularity Isolated singularity Removable singularity Zeros and poles Complex functions Complex-valued
Borel–Carathéodory_theorem
Type of mathematical curve
right is needed for having a true Weierstrass form. Singular cubics in Weierstrass form Isolated point y2 = x3 − x2 semicubical parabola y2 = x3 Double
Cubic_plane_curve
i {\displaystyle f_{i}} are germs of holomorphic functions with isolated singularities, the vanishing cycle complex of f {\displaystyle f} is isomorphic
Thom–Sebastiani_theorem
Association of one output to each input
analytic everywhere except for isolated singularities, but whose value may "jump" if one follows a closed loop around a singularity. This jump is called the
Function_(mathematics)
Since, for holomorphic functions the sum of the residues at the isolated singularities plus the residue at infinity is zero, it can be expressed as: Res
Residue_at_infinity
Harmonic functions as solutions to Laplace's equation
behavior of isolated singularities of positive harmonic functions. As alluded to in the last section, one can classify the isolated singularities of harmonic
Potential_theory
Conformal mappings in complex analysis
regular singular points at z = 0, 1, and ∞, corresponding to the vertices of the triangle with angles πα, πγ, and πβ respectively. At these singular points
Schwarz_triangle_function
American mathematician
"Refined asymptotics for constant scalar curvature metrics with isolated singularities". Inventiones Mathematicae. 135 (2): 233–272. arXiv:math/9807038
Rafe_Mazzeo
Type of mathematical functions
Francesco Severi. Hartogs proved some basic results, such as every isolated singularity is removable, for every analytic function f : C n → C {\displaystyle
Function of several complex variables
Function_of_several_complex_variables
Vietnamese-French mathematician (1947–2025)
Terence Gaffney and David B. Massey). He was particularly concerned with singularity theory in the complex domain (Milnor fibrations, perverse sheaves). In
Lê_Dũng_Tráng
French mathematician (born 1947)
functions, but these multi-valued functions have merely isolated singularities without singularities that form cuts with dimension one or greater. Écalle's
Jean_Écalle
Infinite series that is not convergent
sometimes confused with zeta function regularization. If s = 0 is an isolated singularity, the sum is defined by the constant term of the Laurent series expansion
Divergent_series
Point on a curve not given by a smooth embedding of a parameter
singular point at the origin. However, a node such as that of y 2 − x 3 − x 2 = 0 {\displaystyle y^{2}-x^{3}-x^{2}=0} at the origin is a singularity of
Singular_point_of_a_curve
French mathematician (1789–1857)
complex-valued function f(z) can be expanded in the neighborhood of a singularity a as f ( z ) = φ ( z ) + B 1 z − a + B 2 ( z − a ) 2 + ⋯ + B n ( z −
Augustin-Louis_Cauchy
Objects of certain abelian categories associated to topological spaces
which you move between singular CY target spaces require moving through either a small resolution or deformation of the singularity (T. Hubsch, 1992) and
Perverse_sheaf
{Z} /2\mathbb {Z} )} which is a singular subvariety of A 3 {\displaystyle \mathbb {A} ^{3}} with isolated singularity at ( 0 , 0 , 0 ) {\displaystyle
GIT_quotient
Cubic plane curve
the line at infinity is crossed by the asymptotic line. It has an isolated singular point, at the point where the line at infinity is crossed by its axis
Witch_of_Agnesi
American mathematician (born 1931)
dimension 9 around a singular point is diffeomorphic to these exotic spheres. Subsequently, Milnor worked on the topology of isolated singular points of complex
John_Milnor
British mathematician (1903–1987)
differential geometry, and general relativity. The concept of Du Val singularity of an algebraic surface is named after him. Du Val was born in Cheadle
Patrick_du_Val
American mathematician (1942–2017)
analytically continued at least into the half-plane Re s > 0 except for an isolated singularity (presumably a simple pole) at s = 0." This should be "at s = 1" according
Paul_Chernoff
Compact astronomical body
hole would create a so-called naked singularity, a singularity outside of a black hole. Because these singularities make the universe inherently unpredictable
Black_hole
Singularities of algebraic varieties
(1985) and Reid. In particular, a terminal 3-fold singularity is the quotient of a hypersurface singularity with multiplicity 2 by a finite cyclic group.
Canonical_singularity
Concept in algebraic geometry
scheme of dimension 2 has only isolated singularities. Normalization is not usually used for resolution of singularities for schemes of higher dimension
Normal_scheme
Comic book series
new character named Singularity, a pocket universe that gains self-consciousness during "Secret Wars". Wilson likened Singularity to Q from Star Trek:
A-Force
Exact solution for the Einstein field equations
outside that horizon. However, neither surface is a true singularity, since their apparent singularity can be eliminated in a different coordinate system.
Kerr_metric
British mathematician
been in singularity theory as developed by R. Thom, J. Milnor and V. Arnold, and especially concerns the classification of isolated singularities of differentiable
C._T._C._Wall
Differential form in commutative algebra
Other counterexamples can be found in algebraic plane curves with isolated singularities whose Milnor and Tjurina numbers are non-equal. A proof of Grothendieck's
Kähler_differential
Industrial robot
always singular in the sense that they can never span a six-dimensional twist space. This is often called an architectural singularity. A singularity is usually
Serial_manipulator
On when a manifold that admits a singular foliation is homeomorphic to the sphere
the singularity a critical point of the function. The singularity is a center if it is a local extremum of the function; otherwise, the singularity is
Reeb_sphere_theorem
French mathematician
contributions to algebraic geometry and commutative algebra, specifically to singularity theory, multiplicity theory and valuation theory. Teissier attained his
Bernard_Teissier
Region in spacetime from which nothing can escape
fundamental gravitational collapse models, an event horizon forms before the singularity of a black hole. If all the stars in the Milky Way would gradually aggregate
Event_horizon
Technique for wavelet analysis
effect that increases the number of large coefficients produced by isolated singularities. Each lifting step maintains the filter biorthogonality but provides
Lifting_scheme
3 {\displaystyle \mathbb {V} (f)\subset \mathbb {C} ^{3}} has an isolated singularity at the origin since f ( 0 ) = 0 {\displaystyle f(0)=0} and all partial
Intersection_homology
Term in mathematics
Scientific, p. 380, ISBN 978-981-02-0662-8 Looijenga, E. J. N. (1984), Isolated singular points on complete intersections, London Mathematical Society Lecture
Complete_intersection
American mathematician
Stern, Pure hodge structure on the L2-cohomology of varieties with isolated singularities, Journal fur die Reine und Angewandte Mathematik, vol. 533 (2001)
Mark_Stern
Indian university teacher (born 1971)
concrete problems. His results on 0-cycles on algebraic varieties with isolated singularities effectively reduces their study to the corresponding study on the
Amalendu_Krishna
Latvian-American mathematician (1914–1993)
proved an extension of Riemann's theorem on removable singularities, showing that any isolated singularity of a pencil of minimal surfaces can be removed; he
Lipman_Bers
Isolated point in the solution set of a polynomial equation in two real variables
in two complex variables can never have an isolated point. An acnode is a critical point, or singularity, of the defining polynomial function, in the
Acnode
Hypothetical particle with one magnetic pole
particle physics, a magnetic monopole is a hypothetical particle that is an isolated magnet with only one magnetic pole (a north pole without a south pole or
Magnetic_monopole
{\displaystyle {\mathcal {F}}} on S {\displaystyle S} which may admit isolated singularities, together with a transverse measure μ {\displaystyle \mu } , i.e
Thurston_boundary
The soldier reacts violently to the sergeant's advances, and, completely isolated, ends up committing suicide. Murphy wrote the screenplay for the 1968 adaptation
List of gay novels prior to the Stonewall riots
List_of_gay_novels_prior_to_the_Stonewall_riots
2025 film
28 November 2025. Re-acquainting with her former partner Martín in an isolated summer house near a lake after 12 years, Artificial Intelligence specialist
Singular_(film)
some affine variety Z {\displaystyle Z} ; and thus cannot have an isolated singularity. Freudenburg's theorem—The above necessary geometrical condition
Locally_nilpotent_derivation
ISOLATED SINGULARITY
ISOLATED SINGULARITY
Surname or Lastname
English (chiefly East Anglia)
English (chiefly East Anglia) : from a Germanic personal name composed of the elements folk ‘people’ + hari, heri ‘army’, which was introduced into England from France by the Normans; isolated examples may derive from the cognate Old English Folchere or Old Norse Folkar, but these names were far less common.
Surname or Lastname
English (Devon)
English (Devon) : from Middle English hauek ‘hawk’, applied as a metonymic occupational name for a hawker (see Hawker), a name denoting a tenant who held land in return for providing hawks for his lord, or a nickname for someone supposedly resembling a hawk. There was an Old English personal name (originally a byname) H(e)afoc ‘hawk’, which persisted into the early Middle English period as a personal name and may therefore also be a source.English (Devon) : topographic name for someone who lived in an isolated nook, from Middle English halke (derived from Old English halh + the diminutive suffix -oc), or a habitational name from some minor place named with this word, such as Halke in Sheldwich, Kent.
Surname or Lastname
English
English : habitational name from any of the various places so called. The majority, with examples in at least fourteen counties, get the name from Old English hÅh ‘ridge’, ‘spur’ (literally ‘heel’) + tÅ«n ‘enclosure’, ‘settlement’. Haughton in Nottinghamshire also has this origin, and may have contributed to the surname. A smaller group of Houghtons, with examples in Lancashire and South Yorkshire, have as their first element Old English halh ‘nook’, ‘recess’. In the case of isolated examples in Devon and East Yorkshire, the first elements appear to be unattested Old English personal names or bynames, of which the forms approximate to Huhha and Hofa respectively, but the meanings are unknown.
Surname or Lastname
English and Scottish
English and Scottish : habitational name from any of the numerous places so called. The vast majority, including those in Cambridgeshire, Cumbria, Dumfries, County Durham, Kent, Lancashire, Lincolnshire, Norfolk, Northumberland, Oxfordshire, Sussex, and West Yorkshire, are named from Old English denu ‘valley’ (see Dean 1) + tūn ‘enclosure’, ‘settlement’. An isolated example in Northamptonshire appears in Domesday Book as Dodintone ‘settlement associated with Dodda’.
Surname or Lastname
English
English : habitational name from any of several places called Dockray, of which there are four examples in Cumbria. A possible origin of the place name is Old Norse d{o,}kk ‘hollow’, ‘valley’ + vrá ‘isolated place’; the first element is, however, more likely to be Old English docce ‘dock’ (the plant).Irish : reduced Anglicized form of Gaelic Ó Dochraidh ‘descendant of Dochradh’, a personal name that is a variant of Dochartach (see Doherty).
Girl/Female
Muslim/Islamic
Singularity
Girl/Female
Arabic, Muslim, Sindhi
Singularity
Boy/Male
Muslim
Singularity
Boy/Male
Indian
Singularity
ISOLATED SINGULARITY
ISOLATED SINGULARITY
Girl/Female
Hindu, Indian, Traditional
Daughter of the House
Girl/Female
Hindi Indian Sanskrit
A princess.
Female
Polish
Pet form of Polish Julianna, JULITA means "descended from Jupiter (Jove)."
Girl/Female
Arabic, Australian, Muslim
God's Swear of Life
Boy/Male
Tamil
The Moon
Boy/Male
Tamil
Ambition
Girl/Female
Hindu, Indian
Lucky; Goddess
Female
English
Modern variant spelling of Medieval English Allison, ALLYSON means "noble sort."
Girl/Female
African, Australian
Air; Wind
Girl/Female
British, English
Flower Name; It Produce a Bright Orange-yellow Color; Sometimes Used as a Dye
ISOLATED SINGULARITY
ISOLATED SINGULARITY
ISOLATED SINGULARITY
ISOLATED SINGULARITY
ISOLATED SINGULARITY
p. pr. & vb. n.
of Isolate
imp. & p. p.
of Insolate
n.
One who, or that which, isolates.
a.
Inflated with wind.
adv.
In an isolated manner.
a.
Flushed, inflated.
v. t.
To insulate. See Insulate.
a.
Distended or enlarged fictitiously; as, inflated prices, etc.
a.
Turgid; swelling; puffed up; bombastic; pompous; as, an inflated style.
v. t.
To place in a detached situation; to place by itself or alone; to insulate; to separate from others.
v. t.
To separate from all foreign substances; to make pure; to obtain in a free state.
p. pr. & vb. n.
of Insolate
a.
Placed or standing alone; detached; separated from others.
a.
Inflated; boastful.
n.
An idolater.
a.
Inflated; bombastic.
imp. & p. p.
of Isolate
p. a.
Blown in; inflated.
a.
Filled, as with air or gas; blown up; distended; as, a balloon inflated with gas.
p. a.
Standing by itself; not being contiguous to other bodies; separated; unconnected; isolated; as, an insulated house or column.