UNT Scholarly Works - 69 Matching Results

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An abstract index theorem on non-compact Riemannian manifolds

Article on an abstract index theorem on non-compact Riemannian manifolds.

Date: 1993

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Asupra structurii grupurilor abeliene finite

Article presenting a direct elementary proof to a classical result regarding the structure of finite abelian groups as products of descending cyclic groups.

Date: 2007

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Asupra sumelor de puteri asemenea

Article addressing, from a historical perspective, Newton's sums of like powers of natural numbers.

Date: February 2005

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Asupra unei probleme de loc geometric a lui A. Dafina

Article generalizing a certain geometric locus problem due to A. Dafina.

Date: 2003

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Curvature Bundle Morphisms for Hypersurface Generalized Dirac Operators

This article establishes uses a Gauss-like relationship to examine how the curvature bundle morphisms relate.

Date: 2016

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

O demonstratie directă a faptului că L1 (X, B, μ) verifică principiul tare al maximului modulului

Article proposing a new direct proof of the fact that L^1 verifies the strong maximum principle, i.e., any analytic map from the complex unit disk into L^1, constant in norm, must be constant.

Date: 1989

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Determinant Identities and the Geometry of Lines and Circles

This article focuses on the nontrivial determinant identities which typically underlie the complex analytic proofs of all the results in the plane geometry of lines and circles.

Date: October 20, 2015

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

An elementary characterization of the orders of non-abelian groups

In this article, the author presents an elementary proof of a result due to Dickson characterizing those integers n admitting non-abelian groups of order n.

Date: 2011

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

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The essential uniqueness of the Connes-Morley theorem

Article on the essential uniqueness of the Connes-Morley theorem.

Date: 2006

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

O generalizare a problemei piesei de 5 lei a lui Ţiţeica

The '5 lei coin' problem of Titeica is generalized to circles of arbitrary radii.

Date: 2012

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Generalizarea problemei 0:59

This note extends a certain combinatorics problem of I. Tomescu.

Date: 1980

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

An inductive proof of the Cayley-Hamilton theorem

In this article, the author investigates a computational proof of the Cayley-Hamilton theroem, based on induction.

Date: July 2014

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Legătura dintre sumele Stieltjes şi sumele simetrice elementare

Article discussing studies of the relationship between the Stieltjes sums and the elementary symmetric sums.

Date: February 2012

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

The Levi problem on mixed manifolds

Article discussing the Levi problem on mixed manifolds. This article gives a new proof that the problem of Levi, to mixed varieties have a solution in the sense that every pseudoconvex closely mixed variety, with enough real global morphisms, is a variety of Cartan.

Date: 1984

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Magnetic Schröodinger operators with discrete spectra on non-compact Kähler manifolds

This article identifies a class of magnetic Schrödinger operators on Kähler manifolds which exhibit pure point spectrum.

Date: May 17, 2013

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Maximum of a function

In this article, the author presents a generalization of a certain Putnam problem.

Date: January 2014

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

On a class of Stieltjes-Van Vleck polynomials

Article on a class of Stieltjes-Van Vleck polynomials.

Date: 2013

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

On a family of iterated integrals

This article discusses a family of iterated integrals and generalizing an iterated integral identity proposed at a Putnam competition in 1941.

Date: 2013

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

On Bär's Conformal Lower Bound for the Spectrum of Generalized Dirac Operators

Article discussing Bär's conformal lower bound for the spectrum of generalized Dirac operators.

Date: 2000

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

On Morley's miracle theorem

Article on Morley's miracle theorem. The authors use work by A. Connes to explore possible generalizations of Morley's trisector theorem to triangles in arbitrary value fields.

Date: 2004

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

On the constructibility with ruler and compass of a minimum chord in a parabola

Article on the constructibility with ruler and compass of a minimum chord in a parabola. The author gives a constructive description of all the points inside a parabola admitting a minimum chord of fixed direction.

Date: 1997

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

On the exact solution of certain generic nonlinear polynomial systems with cyclic symmetry

This article examines how in view of the fundamental theorem of algebra and basic Galois theory solving nonlinear systems of polynomial equations exactly means in general reducing them to one single equation in one variable.

Date: 2011

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

On the first Vafa-Witten bound for two-dimensional tori

This article discusses the first Vafa-Witten bound for two-dimensional tori.

Date: 2000

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

open access

Polynomial Harmonic Decompositions

Article on polynomial harmonic decompositions. For real polynomials in two indeterminates a classical polynomial harmonic decomposition is extended from square-norm divisors to conic ones.

Date: January 2017

Creator: Anghel, Nicolae

Item Type: Article

Partner: UNT College of Arts and Sciences

UNT Scholarly Works - 69 Matching Results

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An abstract index theorem on non-compact Riemannian manifolds

Asupra structurii grupurilor abeliene finite

Asupra sumelor de puteri asemenea

Asupra unei probleme de loc geometric a lui A. Dafina

Curvature Bundle Morphisms for Hypersurface Generalized Dirac Operators

O demonstratie directă a faptului că L1 (X, B, μ) verifică principiul tare al maximului modulului

Determinant Identities and the Geometry of Lines and Circles

An elementary characterization of the orders of non-abelian groups

The essential uniqueness of the Connes-Morley theorem

O generalizare a problemei piesei de 5 lei a lui Ţiţeica

Generalizarea problemei 0:59

An inductive proof of the Cayley-Hamilton theorem

Legătura dintre sumele Stieltjes şi sumele simetrice elementare

The Levi problem on mixed manifolds

Magnetic Schröodinger operators with discrete spectra on non-compact Kähler manifolds

Maximum of a function

On a class of Stieltjes-Van Vleck polynomials

On a family of iterated integrals

On Bär's Conformal Lower Bound for the Spectrum of Generalized Dirac Operators

On Morley's miracle theorem

On the constructibility with ruler and compass of a minimum chord in a parabola

On the exact solution of certain generic nonlinear polynomial systems with cyclic symmetry

On the first Vafa-Witten bound for two-dimensional tori

Polynomial Harmonic Decompositions