On the local degree of plane analytic mappings.

Sȩkalski, Maciej

Displaying similar documents to “On the local degree of plane analytic mappings.”

Non-zero constant Jacobian polynomial maps of $ℂ ²$

Nguyen Van Chau (1999)

Annales Polonici Mathematici

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We study the behavior at infinity of non-zero constant Jacobian polynomial maps f = (P,Q) in ℂ² by analyzing the influence of the Jacobian condition on the structure of Newton-Puiseux expansions of branches at infinity of level sets of the components. One of the results obtained states that the Jacobian conjecture in ℂ² is true if the Jacobian condition ensures that the restriction of Q to the curve P = 0 has only one pole.

Formulae for the singularities at infinity of plane algebraic curves.

Gwoździewicz, Janusz, Płoski, Arkadiusz (2001)

Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica

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On the algebra of constants of polynomial derivations in two variables

Janusz Zieliński (2000)

Colloquium Mathematicae

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Let d be a k-derivation of k[x,y], where k is a field of characteristic zero. Denote by $\tilde{d}$ the unique extension of d to k(x,y). We prove that if ker d ≠ k, then ker $\tilde{d}$ = (ker d)0, where (ker d)0 is the field of fractions of ker d.

Multiplicity estimate for solutions of extended Ramanujan’s system

Evgeniy Zorin (2012)

Journal de Théorie des Nombres de Bordeaux

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We establish a new for solutions of a differential system extending Ramanujan’s classical differential relations. This result can be useful in the study of arithmetic properties of values of Riemann zeta function at odd positive integers (Nesterenko, 2011).

Isolated intersection multiplicity and regular separation of analytic sets

Piotr Tworzewski (1993)

Annales Polonici Mathematici

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An isolated point of intersection of two analytic sets is considered. We give a sharp estimate of their regular separation exponent in terms of intersection multiplicity and local degrees.

The resultant of non-commutative polynomials

Aleksandra Lj. Erić (2008)

Matematički Vesnik

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Some elementary applications of topological degree.

Pavel, Dan Gabriel (2001)

Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică

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Jung's type theorem for polynomial transformations of ℂ²

Sławomir Kołodziej (1991)

Annales Polonici Mathematici

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We prove that among counterexamples to the Jacobian Conjecture, if there are any, we can find one of lowest degree, the coordinates of which have the form $x^{m} y^{n}$ + terms of degree < m+n.

Computation of 2-groups of positive classes of exceptional number fields

Jean-François Jaulent, Sebastian Pauli, Michael E. Pohst, Florence Soriano–Gafiuk (2008)

Journal de Théorie des Nombres de Bordeaux

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We present an algorithm for computing the 2-group ${𝒞 ℓ}_{F}^{p o s}$ of the positive divisor classes in case the number field $F$ has exceptional dyadic places. As an application, we compute the 2-rank of the wild kernel $W K_{2} (F)$ in $K_{2} (F)$ .

Sharper ABC-based bounds for congruent polynomials

Daniel J. Bernstein (2005)

Journal de Théorie des Nombres de Bordeaux

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Agrawal, Kayal, and Saxena recently introduced a new method of proving that an integer is prime. The speed of the Agrawal-Kayal-Saxena method depends on proven lower bounds for the size of the multiplicative semigroup generated by several polynomials modulo another polynomial $h$ . Voloch pointed out an application of the Stothers-Mason ABC theorem in this context: under mild assumptions, distinct polynomials $A, B, C$ of degree at most $1.2 deg h - 0.2 deg rad A B C$ cannot all be congruent modulo $h$ . This paper presents two...