Results 11 to 20 of about 1,777,027 (265)

Complex singularities around the QCD critical point at finite densities [PDF]

open access: yes, 2014
Partition function zeros provide alternative approach to study phase structure of finite density QCD. The structure of the Lee-Yang edge singularities associated with the zeros in the complex chemical potential plane has a strong influence on the real ...
Ejiri, Shinji   +2 more
core   +1 more source

A new proof of the theorems of Lin-Zaidenberg and Abhyankar-Moh-Suzuki [PDF]

open access: yes, 2015
Using the theory of minimal models of quasi-projective surfaces we give a new proof of the theorem of Lin-Zaidenberg which says that every topologically contractible algebraic curve in the complex affine plane has equation $X^n=Y^m$ in some algebraic ...
Palka, Karol
core   +1 more source

Absence of Zeros and Asymptotic Error Estimates for Airy and Parabolic Cylinder Functions [PDF]

open access: yes, 2012
We derive WKB approximations for a class of Airy and parabolic cylinder functions in the complex plane, including quantitative error bounds. We prove that all zeros of the Airy function lie on a ray in the complex plane, and that the parabolic cylinder ...
Finster, Felix, Smoller, Joel
core   +3 more sources

Difference equations in the complex plane

open access: yesJournal of Mathematical Analysis and Applications, 1985
The difference equation \(z_{n+1}=T(z_ n)\) for \(n=0,1,2,...\), where T is an analytic function in the complex plane with fixed point \(z^*\) is studied subject to the condition \(| T'(z)|
W.J Walker, M. K. Vamanamurthy
openaire   +3 more sources

On the genus of the complex projective plane [PDF]

open access: yesAequationes Mathematicae, 1989
The paper is devoted to the construction of a pseudo-triangulation of the complex projective plane \({\mathbb{C}}P^ 2\), with 5 vertices, 10 edges, 20 triangles, 20 tetrahedra and 8 5-simplexes, which is proved to be minimal with respect to both the number of vertices and 5-simplexes.
openaire   +2 more sources

The Pantograph Equation in the Complex Plane

open access: yesJournal of Mathematical Analysis and Applications, 1997
The subject matter is focused on two functional differential equations. First of them is the pantograph equation with involution on the complex plane: \[ y'(z)=\sum_{k=0}^{m-1} \left[ a_k y(\omega^k z) + b_k y(r \omega^k z) + c_k y'(r \omega^k z) \right] , \] where \(a_k, b_k, c_k \in \mathbb{C}, k= 0, 1, \dots , m-1,\) are given, \(r \in (0,1)\), and \
Arieh Iserles, Gregory Derfel
openaire   +2 more sources

On the Complexity of Arrangements of Circles in the Plane [PDF]

open access: yesDiscrete & Computational Geometry, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alon, N.   +3 more
openaire   +3 more sources

Chromatic roots are dense in the whole complex plane [PDF]

open access: yes, 2000
I show that the zeros of the chromatic polynomials P_G(q) for the generalized theta graphs \Theta^{(s,p)} are, taken together, dense in the whole complex plane with the possible exception of the disc |q-1| < 1.
Sokal, Alan D.
core   +3 more sources

Distinct distances in the complex plane [PDF]

open access: yesTransactions of the American Mathematical Society, 2021
We prove that if P P is a set of n n points in C 2 \mathbb {C}^2 , then either the points in P P determine Ω ( n 1 − ε ) \Omega (n^{1 ...
Joshua Zahl, Adam Sheffer
openaire   +3 more sources

Triangle formulas in the complex plane [PDF]

open access: yesMathematics of Computation, 1964
where R(f; z1) is the remainder at zi due to linear interpolation to f(z) at Z2 and Z3. This formula was subsequently found in Approximation: Theory and Practice by I. J. Schoenberg (Notes on a series of lectures at Stanford University, 1955) and correspondence with Schoenberg revealed that it was obtained by him and T.
openaire   +1 more source

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