Nicolae Popescu

ORCID: 0009-0005-8807-4980
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About
Contact & Profiles
Research Areas
  • Algebraic Geometry and Number Theory
  • Rings, Modules, and Algebras
  • advanced mathematical theories
  • Advanced Differential Equations and Dynamical Systems
  • Advanced Topics in Algebra
  • Advanced Algebra and Geometry
  • Astronomy and Astrophysical Research
  • Advanced Topology and Set Theory
  • Homotopy and Cohomology in Algebraic Topology
  • Commutative Algebra and Its Applications
  • Solar and Space Plasma Dynamics
  • Mathematical Dynamics and Fractals
  • Galaxies: Formation, Evolution, Phenomena
  • Holomorphic and Operator Theory
  • Algebraic structures and combinatorial models
  • Polynomial and algebraic computation
  • Meromorphic and Entire Functions
  • Stochastic processes and financial applications
  • Astronomical Observations and Instrumentation
  • Theology and Philosophy of Evil
  • Stellar, planetary, and galactic studies
  • Geomagnetism and Paleomagnetism Studies
  • Analytic Number Theory Research
  • Belt Conveyor Systems Engineering
  • Algebraic and Geometric Analysis

Ovidius University
2016-2020

Universitatea Națională de Știință și Tehnologie Politehnica București
2020

Romanian Academy
2003-2014

University of Craiova
2012-2014

Astronomical Institute of the Slovak Academy of Sciences
1999-2014

Valahia University of Targoviste
2014

Czech Academy of Sciences, Institute of Mathematics
1996-2012

University of Cambridge
2010

Institut de Mathématiques de Jussieu-Paris Rive Gauche
2010

Mathematical Institute of the Slovak Academy of Sciences
2010

P ro o f The equivalence a)<=>b) is obvious.b) c).

10.1215/kjm/1250520346 article EN Kyoto journal of mathematics 1988-01-01

10.24033/bsmf.1673 article FR Bulletin de la Société mathématique de France 1968-01-01

10.1016/0021-8693(70)90039-6 article EN publisher-specific-oa Journal of Algebra 1970-09-01

10.1006/jnth.1995.1058 article EN publisher-specific-oa Journal of Number Theory 1995-05-01

T his w ork is a natural continuation of our previous works [1], [2], P i W e in te n d here to describe all types valuations on K ( X ) .T possibility given by main result [2 ] which give description so-called residual transcendental extension valuation .Following ideea o f MacLane (see [7 ]) fin the tio "ordered system (X )" § 2) and lim it such sy ste m .The ain section 5 shows th t v ry r. a. .extension y may be defined s suitable ordered t. extensions K(X ).In last sections re concerned...

10.1215/kjm/1250520072 article EN Kyoto journal of mathematics 1990-01-01

10.1006/jnth.1997.2198 article EN publisher-specific-oa Journal of Number Theory 1998-02-01

10.1006/jabr.1995.1077 article EN publisher-specific-oa Journal of Algebra 1995-04-01

10.1016/0021-8693(76)90201-5 article FR publisher-specific-oa Journal of Algebra 1976-06-01

10.1016/0021-8693(70)90083-9 article EN Journal of Algebra 1970-05-01

10.1016/s0022-4049(97)00158-8 article EN publisher-specific-oa Journal of Pure and Applied Algebra 1999-02-01

10.1006/jnth.2000.2610 article EN publisher-specific-oa Journal of Number Theory 2001-05-01

10.1016/0021-8693(71)90054-8 article FR publisher-specific-oa Journal of Algebra 1971-06-01

10.1007/pl00004895 article EN Mathematische Zeitschrift 2001-09-01

In this paper, further insight is obtained into the earlier approach of studying residually transcendental extensions a valuation v field K to simple extension K(x) by means minimal pairs, thereby introducing new invariants corresponding any element an algebraic closure K. It also shown that these are independent interest as well. A characterization those elements belonging given such there exists pair (a, δ) for some δ in divisible value group v.

10.1112/s0025579300016090 article EN Mathematika 2002-06-01

10.1016/s0021-8693(03)00379-x article EN publisher-specific-oa Journal of Algebra 2003-06-30

Abstract The generating degree gdeg( A ) of a topological commutative ring with char = 0 is the cardinality smallest subset M for which subring [ ] dense in . For prime number p , denotes completion an algebraic closure field -adic numbers. We prove that 1, i.e., there exists t such [t] also compute where A(U) rigid analytic functions defined on ball U If closed then 2 while if open infinite. show more generally finite any affinoid ℙ 1 ( and infinite wide ).

10.4153/cmb-2001-001-1 article EN Canadian Mathematical Bulletin 2001-03-01

Abstract In this paper we continue to study the spectral norms and their completions ([4]) in case of algebraic closure \documentclass{article} \usepackage{amssymb} \pagestyle{empty} \begin{document} $ \overline {\mathbb Q} \end{document} ℚ ℂ. Let \widetilde{\overline{\mathbb{Q}}} be completion relative norm. We prove that can identified with R‐subalgebra all symmetric functions C ( G ), where ) denotes ℂ‐Banach algebra continuous defined on absolute Galois group = Gal {\overline Q}} / . any...

10.1002/mana.200310106 article EN Mathematische Nachrichten 2003-10-21
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