FUTUR. Portal de la Producció Científica dels Investigadors de la UPC.

Díaz Barrero, José Luis

Total activitats: 966

Grup de recerca: COSDA-UPC - COmpositional and Spatial Data Analysis
Departament: Departament d'Enginyeria Civil i Ambiental
Centre docent: Escola Tècnica Superior d'Enginyers de Camins, Canals i Ports de Barcelona (ETSECCPB)

Correu electrònic: jose.luis.diazupc.edu
Dades de contacte: Directori de la UPC

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A sine-cosine inequality
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 117, num. 7-8, p. 352
DOI: 10.1111/ssm.12253
Data de publicació: 2017-12
Article en revista
A new inequality for the triangle
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 117, num. 7-8, p. 350-351
DOI: 10.1111/ssm.12252
Data de publicació: 2017-12
Article en revista
A fourier sum
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 117, num. 6, p. 283
DOI: 10.1111/ssm.12235
Data de publicació: 2017-10
Article en revista
MR3626333: comparative study of eighth-order methods for finding simple roots of nonlinear equations
Diaz-Barrero, J.L.
Mathematical reviews
Vol. 1, num. 1, p. 1-3
Data de publicació: 2017-08
Article en revista
MR3639709: local convergence of some high order iterative methods based on the decomposition technique using only the first derivative
Diaz-Barrero, J.L.
Mathematical reviews
Vol. 1, num. 1, p. 1
Data de publicació: 2017-08
Article en revista
Picking the right numbers
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 55, num. 3, p. 280
Data de publicació: 2017-08
Article en revista
MR3584552: the Schwarzian-Newton method for solving nonlinear equations, with applications
Diaz-Barrero, J.L.
Mathematical reviews
Vol. 1, num. 1, p. 1-2
Data de publicació: 2017-07
Article en revista
Note on Bergstrom inequality
Diaz-Barrero, J.L.
Octogon mathematical magazine
Vol. 25, num. 1, p. 103-107
Data de publicació: 2017-06
Article en revista
Forward-Backward induction
Diaz-Barrero, J.L.
Arhimede Mathematical Journal
Vol. 4, num. 1, p. 25-32
Data de publicació: 2017-06
Article en revista
MR3602677: a family of second derivative free fourth order continuation method for solving nonlinear equations
Diaz-Barrero, J.L.
Mathematical reviews
Vol. 1, num. 1, p. 1-2
Data de publicació: 2017-06
Article en revista
Inequality involving sums of diferences of square roots of Fibonacci numbers
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 55, num. 2, p. 178
Data de publicació: 2017-05
Article en revista
The same Fibonacci Number
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 55, num. 2, p. 180
Data de publicació: 2017-05
Article en revista
A cyclic sum
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 55, num. 2, p. 182-183
Data de publicació: 2017-05
Article en revista
A system of nonlinear equations
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 117, num. 5, p. 224
DOI: 10.1111/ssm.12227
Data de publicació: 2017-05
Article en revista
Roots of an irrational equation
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 117, num. 3-4, p. 169
DOI: 10.1111/ssm.12219
Data de publicació: 2017-04
Article en revista
MR3575545: on root finding algorithms for complex functions with branch cuts
Diaz-Barrero, J.L.
Mathematical reviews
Vol. 1, num. 1, p. 1-2
Data de publicació: 2017-04
Article en revista
A Lucas number determinant
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 117, num. 3-4, p. 168
DOI: 10.1111/ssm.12219
Data de publicació: 2017-04
Article en revista
MR3548406: Ostrowski inequalities for functions whose first derivatives are logarithmically preinvex.
Diaz-Barrero, J.L.
Mathematical reviews
Vol. 1, num. 1, p. 1
Data de publicació: 2017-03
Article en revista
An irrational infinite sum
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 117, num. 1-2, p. 87
DOI: 10.1111/ssm.12207
Data de publicació: 2017-02
Article en revista
Vieta's formula
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 55, num. 1, p. 84-85
Data de publicació: 2017-02
Article en revista
The limit of a complex function
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 117, num. 1-2, p. 88
DOI: 10.1111/ssm.12207
Data de publicació: 2017-02
Article en revista
Anàlisis de Dades Composicionals i Espacials. COmpositional and Spatial Data Analysis [COSDA]
Martín-Fernández, J. A.; Ortego, M.I.; Egozcue, J. J.; Graffelman, J.; Corral, J.; Jarauta-Bragulat, E.; Diaz-Barrero, J.L.
Projecte R+D+I competitiu
A nonnegative multiple sum
Diaz-Barrero, J.L.
Octogon mathematical magazine
Vol. 24, num. 2, p. 748
Data de publicació: 2017-01
Article en revista
New inequalities for the triangle
Diaz-Barrero, J.L.
Octogon mathematical magazine
Vol. 24, num. 2, p. 532-536
Data de publicació: 2017-01
Article en revista
Some applications of classical discrete inequalities
Diaz-Barrero, J.L.
Arhimede Mathematical Journal
Vol. 3, num. 2, p. 88-98
Data de publicació: 2016-12
Article en revista
Two inequalities for complex numbers
Diaz-Barrero, J.L.
The College mathematics journal
Vol. 47, num. 5, p. 373-374
Data de publicació: 2016-11
Article en revista
[Problem] B-1193: [a new Fibonacci inequality]
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 54, num. 3, p. 272
Data de publicació: 2016-08
Article en revista
[Problem] B-1190: [a Fibonacci rational sum]
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 54, num. 2, p. 179
Data de publicació: 2016-05
Article en revista
[Problem] B-1187: [a nonlinear system of equations with integer solutions]
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 54, num. 2, p. 179
Data de publicació: 2016-05
Article en revista
The minimum value of a sum
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 54, num. 2, p. 181-182
Data de publicació: 2016-05
Article en revista
Problem 5393: an inequality for a quadrilateral
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 116, num. 3, p. 173
DOI: 10.1111/ssm.12166
Data de publicació: 2016-03
Article en revista
Problem B-1182: A sum of squares of Fibonacci Numbers
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 54, num. 1, p. 81
Data de publicació: 2016-02
Article en revista
Problem 5389: an inequality for a scalene triangle
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 116, num. 2, p. 111
DOI: 10.1111/ssm.12159
Data de publicació: 2016-02
Article en revista
Elementary problems and solutions based on binomial coeffcients and Cauchy-Schwarz
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 54, num. 1, p. 83
Data de publicació: 2016-02
Article en revista
New generalization of discrete Montgomery identity with applications
Popescu, P.; Diaz-Barrero, J.L.
RGMIA research report collection (Online y paper)
Vol. 19, p. 1-6
Data de publicació: 2016
Article en revista
Problem 5383
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 116, num. 1, p. 65
DOI: 10.1111/ssm.12154
Data de publicació: 2016-01
Article en revista
[Solution to the problem] 5377[: a metric inequality]
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 115, num. 8, p. 427
DOI: 10.1111/ssm.12147
Data de publicació: 2015-12
Article en revista
Annuli for the zeros of a polynomial
Popescu, P.; Diaz-Barrero, J.L.
Polytechnical University of Bucharest. Scientific bulletin. Series A, applied mathematics and physics
Vol. 77, num. 4, p. 147-156
Data de publicació: 2015-12
Article en revista
Note on the efficiency of some iterative methods for solving nonlinear equations
Grau, M.; Noguera, M.; Diaz-Barrero, J.L.
SeMA Journal
Vol. 71, num. 1, p. 15-22
DOI: 10.1007/s40324-015-0043-z
Data de publicació: 2015-11-02
Article en revista
An inequality in n variables[: problem]
Diaz-Barrero, J.L.
The College mathematics journal
Vol. 46, num. 5, p. 373-374
DOI: 10.4169/college.math.j.46.5.369
Data de publicació: 2015-11
Article en revista
[Solution to the problem] 5371[: a lower bound for a sum of squares]
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 115, num. 7, p. 377
DOI: 10.1111/ssm.12141
Data de publicació: 2015-11
Article en revista
Two complex inequalities of Cauchy type[: problem]
Diaz-Barrero, J.L.
The College mathematics journal
Vol. 46, num. 5, p. 370
DOI: 10.4169/college.math.j.46.5.369
Data de publicació: 2015-11
Article en revista
[Solution to the problem] 5365[: a system of nonlinear equations]
Diaz-Barrero, J.L.
School science and mathematics [en línia]
Vol. 115, num. 6, p. 314
DOI: 10.1111/ssm.12140
Data de publicació: 2015-10
Article en revista
Solution to Problem w18: A telescopic Fibonacci inequality
Diaz-Barrero, J.L.
Octogon mathematical magazine
Vol. 23, num. 2, p. 461
Data de publicació: 2015-10
Article en revista
Solution to Problem w19: A complex rational identity
Diaz-Barrero, J.L.
Octogon mathematical magazine
Vol. 23, num. 2, p. 461-462
Data de publicació: 2015-10
Article en revista
Problem PP.23524: A limit of a tangent of a sum of arctangents
Diaz-Barrero, J.L.
Octogon mathematical magazine
Vol. 22, num. 2, p. 1075
Data de publicació: 2015-10
Article en revista
[Problem] B-1171: a ratio of Fibonacci Sums
Diaz-Barrero, J.L.
Fibonacci quarterly
Vol. 53, num. 3, p. 272
Data de publicació: 2015-08
Article en revista
Some inequalities for the triangle
Gibergans-Báguena, J.; Diaz-Barrero, J.L.
Arhimede Mathematical Journal
Vol. 2, num. 1, p. 21-30
Data de publicació: 2015-07
Article en revista
Holder's inequality revisited
Diaz-Barrero, J.L.
Arhimede Mathematical Journal
Vol. 2, num. 1, p. 2-11
Data de publicació: 2015-07
Article en revista
Problem MH-21: An strict arithmetical inequality
Diaz-Barrero, J.L.
Arhimede Mathematical Journal
Vol. 2, num. 1, p. 16
Data de publicació: 2015-06
Article en revista

Díaz Barrero, José Luis

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