Precup, Radu; Rodríguez-López, Jorge Componentwise localization of solutions to systems of operator inclusions via Harnack type inequalities. (English) Zbl 07719621 Quaest. Math. 46, No. 7, 1481-1496 (2023). MSC: 47H10 34A60 34B18 PDFBibTeX XMLCite \textit{R. Precup} and \textit{J. Rodríguez-López}, Quaest. Math. 46, No. 7, 1481--1496 (2023; Zbl 07719621) Full Text: DOI
Rodríguez-López, Jorge; Precup, Radu; Gheorghiu, Calin-Ioan On the localization and numerical computation of positive radial solutions for \(\phi \)-Laplace equations in the annulus. (English) Zbl 1513.35246 Electron. J. Qual. Theory Differ. Equ. 2022, Paper No. 47, 22 p. (2022). MSC: 35J60 34B18 PDFBibTeX XMLCite \textit{J. Rodríguez-López} et al., Electron. J. Qual. Theory Differ. Equ. 2022, Paper No. 47, 22 p. (2022; Zbl 1513.35246) Full Text: DOI
Benedetti, Irene; Cardinali, Tiziana; Precup, Radu Fixed point-critical point hybrid theorems and application to systems with partial variational structure. (English) Zbl 07419644 J. Fixed Point Theory Appl. 23, No. 4, Paper No. 63, 19 p. (2021). MSC: 47J25 47H10 47J30 34C25 PDFBibTeX XMLCite \textit{I. Benedetti} et al., J. Fixed Point Theory Appl. 23, No. 4, Paper No. 63, 19 p. (2021; Zbl 07419644) Full Text: DOI
Precup, Radu; Pucci, Patrizia; Varga, Csaba Energy-based localization and multiplicity of radially symmetric states for the stationary \(p\)-Laplace diffusion. (English) Zbl 1441.35110 Complex Var. Elliptic Equ. 65, No. 7, 1198-1209 (2020). Reviewer: Said El Manouni (Berlin) MSC: 35J20 35J60 34B15 35J15 35J25 PDFBibTeX XMLCite \textit{R. Precup} et al., Complex Var. Elliptic Equ. 65, No. 7, 1198--1209 (2020; Zbl 1441.35110) Full Text: DOI
Herlea, Diana-Raluca; O’Regan, Donal; Precup, Radu Harnack type inequalities and multiple solutions in cones of nonlinear problems. (English) Zbl 1444.47065 Z. Anal. Anwend. 39, No. 2, 151-170 (2020). Reviewer: Vincenzo Vespri (Firenze) MSC: 47J05 47H07 34B15 34B18 PDFBibTeX XMLCite \textit{D.-R. Herlea} et al., Z. Anal. Anwend. 39, No. 2, 151--170 (2020; Zbl 1444.47065) Full Text: DOI
Precup, Radu A variational analogue of Krasnoselskii’s cone fixed point theory. (English) Zbl 1441.47090 Area, Iván (ed.) et al., Nonlinear analysis and boundary value problems. NABVP 2018, Santiago de Compostela, Spain, September 4–7, 2018. Proceedings of the international conference. Dedicated to Juan J. Nieto on the occasion of his 60th birthday. Cham: Springer. Springer Proc. Math. Stat. 292, 1-18 (2019). Reviewer: Dian K. Palagachev (Bari) MSC: 47J30 47N20 34G20 47H10 PDFBibTeX XMLCite \textit{R. Precup}, Springer Proc. Math. Stat. 292, 1--18 (2019; Zbl 1441.47090) Full Text: DOI
Precup, Radu; Rodríguez-López, Jorge Positive solutions for \(\phi\)-Laplace equations with discontinuous state-dependent forcing terms. (English) Zbl 1420.34050 Nonlinear Anal., Model. Control 24, No. 3, 447-461 (2019). MSC: 34B18 34A36 47N20 PDFBibTeX XMLCite \textit{R. Precup} and \textit{J. Rodríguez-López}, Nonlinear Anal., Model. Control 24, No. 3, 447--461 (2019; Zbl 1420.34050) Full Text: DOI
Precup, Radu; Rodríguez-López, Jorge Multiplicity results for operator systems via fixed point index. (English) Zbl 1407.34036 Result. Math. 74, No. 1, Paper No. 25, 14 p. (2019). MSC: 34B15 34B18 47H10 47H11 PDFBibTeX XMLCite \textit{R. Precup} and \textit{J. Rodríguez-López}, Result. Math. 74, No. 1, Paper No. 25, 14 p. (2019; Zbl 1407.34036) Full Text: DOI
Novac, Adela; Precup, Radu Theory and computation for multiple positive solutions of non-local problems at resonance. (English) Zbl 1467.34025 J. Appl. Anal. Comput. 8, No. 2, 486-497 (2018). Reviewer: Narahari Parhi (Bhubaneswar) MSC: 34B10 34B15 65L10 34B18 PDFBibTeX XMLCite \textit{A. Novac} and \textit{R. Precup}, J. Appl. Anal. Comput. 8, No. 2, 486--497 (2018; Zbl 1467.34025) Full Text: DOI
Boulaiki, Habiba; Moussaoui, Toufik; Precup, Radu Multiple positive solutions to a \((2m)\)th-order boundary value problem. (English) Zbl 1449.34070 Carpathian J. Math. 34, No. 2, 167-182 (2018). MSC: 34B18 34B40 47J30 58E05 PDFBibTeX XMLCite \textit{H. Boulaiki} et al., Carpathian J. Math. 34, No. 2, 167--182 (2018; Zbl 1449.34070)
Precup, Radu; Rodríguez-López, Jorge Positive solutions for discontinuous problems with applications to \(\phi \)-Laplacian equations. (English) Zbl 1454.34031 J. Fixed Point Theory Appl. 20, No. 4, Paper No. 156, 17 p. (2018). MSC: 34A36 34B18 47H10 PDFBibTeX XMLCite \textit{R. Precup} and \textit{J. Rodríguez-López}, J. Fixed Point Theory Appl. 20, No. 4, Paper No. 156, 17 p. (2018; Zbl 1454.34031) Full Text: DOI
Precup, Radu A critical point theorem in bounded convex sets and localization of Nash-type equilibria of nonvariational systems. (English) Zbl 1388.58008 J. Math. Anal. Appl. 463, No. 1, 412-431 (2018). MSC: 58E05 58E30 49J45 PDFBibTeX XMLCite \textit{R. Precup}, J. Math. Anal. Appl. 463, No. 1, 412--431 (2018; Zbl 1388.58008) Full Text: DOI
Precup, Radu; Varga, Csaba Localization of positive critical points in Banach spaces and applications. (English) Zbl 1378.58011 Topol. Methods Nonlinear Anal. 49, No. 2, 817-833 (2017). Reviewer: Dorin Andrica (Riyadh) MSC: 58E05 47J30 35J60 35B09 PDFBibTeX XMLCite \textit{R. Precup} and \textit{C. Varga}, Topol. Methods Nonlinear Anal. 49, No. 2, 817--833 (2017; Zbl 1378.58011) Full Text: DOI Euclid
Bunoiu, Renata; Precup, Radu; Varga, Csaba Multiple positive standing wave solutions for Schrödinger equations with oscillating state-dependent potentials. (English) Zbl 1362.35281 Commun. Pure Appl. Anal. 16, No. 3, 953-972 (2017). MSC: 35Q55 35J20 47J30 58E05 35B38 35B09 PDFBibTeX XMLCite \textit{R. Bunoiu} et al., Commun. Pure Appl. Anal. 16, No. 3, 953--972 (2017; Zbl 1362.35281) Full Text: DOI
Precup, Radu Abstract method of upper and lower solutions and application to singular boundary value problems. (English) Zbl 1399.47176 Stud. Univ. Babeș-Bolyai, Math. 61, No. 4, 443-451 (2016). Reviewer: Gheorghe Moroşanu (Budapest) MSC: 47J25 47H07 34B16 34B18 PDFBibTeX XMLCite \textit{R. Precup}, Stud. Univ. Babeș-Bolyai, Math. 61, No. 4, 443--451 (2016; Zbl 1399.47176)
Herlea, Diana-Raluca; Precup, Radu Existence, localization and multiplicity of positive solutions to \(\phi\)-Laplace equations and systems. (English) Zbl 1357.34056 Taiwanese J. Math. 20, No. 1, 77-89 (2016). MSC: 34B18 PDFBibTeX XMLCite \textit{D.-R. Herlea} and \textit{R. Precup}, Taiwanese J. Math. 20, No. 1, 77--89 (2016; Zbl 1357.34056) Full Text: DOI
Precup, Radu Nash-type equilibria for systems of Szulkin functionals. (English) Zbl 1440.47049 Set-Valued Var. Anal. 24, No. 3, 471-482 (2016). MSC: 47J20 49J40 34C25 47N20 PDFBibTeX XMLCite \textit{R. Precup}, Set-Valued Var. Anal. 24, No. 3, 471--482 (2016; Zbl 1440.47049) Full Text: DOI
Cabada, Alberto; Precup, Radu; Saavedra, Lorena; Tersian, Stepan A. Multiple positive solutions to a fourth-order boundary-value problem. (English) Zbl 1357.34054 Electron. J. Differ. Equ. 2016, Paper No. 254, 18 p. (2016). Reviewer: Smail Djebali (Algiers) MSC: 34B18 47J05 47N20 58E50 PDFBibTeX XMLCite \textit{A. Cabada} et al., Electron. J. Differ. Equ. 2016, Paper No. 254, 18 p. (2016; Zbl 1357.34054) Full Text: arXiv EMIS
Infante, Gennaro; Maciejewski, Mateusz; Precup, Radu A topological approach to the existence and multiplicity of positive solutions of \((p, q)\)-Laplacian systems. (English) Zbl 1328.35043 Dyn. Partial Differ. Equ. 12, No. 3, 193-215 (2015). Reviewer: Davide Buoso (Torino) MSC: 35J57 35B09 35B45 35D30 35J92 47H10 PDFBibTeX XMLCite \textit{G. Infante} et al., Dyn. Partial Differ. Equ. 12, No. 3, 193--215 (2015; Zbl 1328.35043) Full Text: DOI arXiv
Precup, Radu Moser-Harnack inequality, Krasnoselskii type fixed point theorems in cones and elliptic problems. (English) Zbl 1282.35176 Topol. Methods Nonlinear Anal. 40, No. 2, 301-313 (2012). MSC: 35J91 47H10 35B38 35B09 35J25 PDFBibTeX XMLCite \textit{R. Precup}, Topol. Methods Nonlinear Anal. 40, No. 2, 301--313 (2012; Zbl 1282.35176)
Precup, Radu; Trif, Damian Multiple positive solutions of non-local initial value problems for first order differential systems. (English) Zbl 1245.34026 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 75, No. 15, 5961-5970 (2012). MSC: 34B18 47H11 34C25 47H30 PDFBibTeX XMLCite \textit{R. Precup} and \textit{D. Trif}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 75, No. 15, 5961--5970 (2012; Zbl 1245.34026) Full Text: DOI
Precup, Radu Critical point theorems in cones and multiple positive solutions of elliptic problems. (English) Zbl 1257.47070 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 75, No. 2, 834-851 (2012). MSC: 47J30 58E05 35J60 PDFBibTeX XMLCite \textit{R. Precup}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 75, No. 2, 834--851 (2012; Zbl 1257.47070) Full Text: DOI
Precup, Radu Two positive nontrivial solutions for a class of semilinear elliptic variational systems. (English) Zbl 1200.35095 J. Math. Anal. Appl. 373, No. 1, 138-146 (2011). MSC: 35J47 35J57 35J50 35J61 35B09 PDFBibTeX XMLCite \textit{R. Precup}, J. Math. Anal. Appl. 373, No. 1, 138--146 (2011; Zbl 1200.35095) Full Text: DOI
Precup, Radu Two positive solutions of some singular boundary value problems. (English) Zbl 1206.34045 Anal. Appl., Singap. 8, No. 3, 305-314 (2010). Reviewer: Yulian An (Shanghai) MSC: 34B18 34B16 47J30 58E05 PDFBibTeX XMLCite \textit{R. Precup}, Anal. Appl., Singap. 8, No. 3, 305--314 (2010; Zbl 1206.34045) Full Text: DOI
Djebali, Smail; Moussaoui, Toufik; Precup, Radu Fourth-order \(p\)-Laplacian nonlinear systems via the vector version of Krasnosel’skiĭ’s fixed point theorem. (English) Zbl 1193.47057 Mediterr. J. Math. 6, No. 4, 447-460 (2009). Reviewer: Rodica Luca Tudorache (Iaşi) MSC: 47H10 34B15 34B18 PDFBibTeX XMLCite \textit{S. Djebali} et al., Mediterr. J. Math. 6, No. 4, 447--460 (2009; Zbl 1193.47057) Full Text: DOI
Precup, Radu The Leray-Schauder boundary condition in critical point theory. (English) Zbl 1186.58012 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 71, No. 7-8, 3218-3228 (2009). Reviewer: Dian K. Palagachev (Bari) MSC: 58E05 34B18 35B38 47J30 47N20 35J20 PDFBibTeX XMLCite \textit{R. Precup}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 71, No. 7--8, 3218--3228 (2009; Zbl 1186.58012) Full Text: DOI
Precup, Radu Existence, localization and multiplicity results for positive radial solutions of semilinear elliptic systems. (English) Zbl 1178.35162 J. Math. Anal. Appl. 352, No. 1, 48-56 (2009). Reviewer: Marlène Frigon (Montréal) MSC: 35J57 35J62 47H10 35B09 35A24 PDFBibTeX XMLCite \textit{R. Precup}, J. Math. Anal. Appl. 352, No. 1, 48--56 (2009; Zbl 1178.35162) Full Text: DOI
Moussaoui, Toufik; Precup, Radu Positive solutions for elliptic boundary value problems with a Harnack-like property. (English) Zbl 1165.47059 Cubo 10, No. 4, 109-117 (2008). Reviewer: Dian K. Palagachev (Bari) MSC: 47N20 47H10 35J65 PDFBibTeX XMLCite \textit{T. Moussaoui} and \textit{R. Precup}, Cubo 10, No. 4, 109--117 (2008; Zbl 1165.47059)
Precup, Radu A compression type mountain pass theorem in conical shells. (English) Zbl 1151.58007 J. Math. Anal. Appl. 338, No. 2, 1116-1130 (2008). Reviewer: Luis Sanchez (Lisboa) MSC: 58E05 34B18 PDFBibTeX XMLCite \textit{R. Precup}, J. Math. Anal. Appl. 338, No. 2, 1116--1130 (2008; Zbl 1151.58007) Full Text: DOI
Precup, Radu Positive solutions of nonlinear systems via the vector version of Krasnoselskii’s fixed point theorems in cones. (English) Zbl 1175.47066 Ann. Tiberiu Popoviciu Semin. Funct. Equ. Approx. Convexity 5, 129-138 (2007). Reviewer: Anatolij Ivan Kolosov (Khar’kov) MSC: 47N20 47H10 47H07 34B18 34C25 PDFBibTeX XMLCite \textit{R. Precup}, Ann. Tiberiu Popoviciu Semin. Funct. Equ. Approx. Convexity 5, 129--138 (2007; Zbl 1175.47066)
Precup, Radu A vector version of Krasnosel’skiĭ’s fixed point theorem in cones and positive periodic solutions of nonlinear systems. (English) Zbl 1134.47041 J. Fixed Point Theory Appl. 2, No. 1, 141-151 (2007). Reviewer: Marco Spadini (Firenze) MSC: 47H10 47H07 37C25 47N20 34C25 PDFBibTeX XMLCite \textit{R. Precup}, J. Fixed Point Theory Appl. 2, No. 1, 141--151 (2007; Zbl 1134.47041) Full Text: DOI
O’Regan, Donal; Precup, Radu Positive solutions of nonlinear systems with \(p\)-Laplacian on finite and semi-infinite intervals. (English) Zbl 1135.34014 Positivity 11, No. 3, 537-548 (2007). Reviewer: Mirosława Zima (Rzeszow) MSC: 34B18 34B40 PDFBibTeX XMLCite \textit{D. O'Regan} and \textit{R. Precup}, Positivity 11, No. 3, 537--548 (2007; Zbl 1135.34014) Full Text: DOI
Liu, Yansheng; Precup, Radu Positive solutions of nonlinear singular integral equations in ordered Banach spaces. (English) Zbl 1118.45009 Nonlinear Funct. Anal. Appl. 11, No. 3, 447-457 (2006). Reviewer: Roland Duduchava (Tbilisi) MSC: 45N05 45M20 45G05 PDFBibTeX XMLCite \textit{Y. Liu} and \textit{R. Precup}, Nonlinear Funct. Anal. Appl. 11, No. 3, 447--457 (2006; Zbl 1118.45009)
Precup, Radu Compression-expansion fixed point theorems in two norms. (English) Zbl 1424.47126 Ann. Tiberiu Popoviciu Semin. Funct. Equ. Approx. Convexity 3, 157-163 (2005). MSC: 47H10 47H07 34B15 PDFBibTeX XMLCite \textit{R. Precup}, Ann. Tiberiu Popoviciu Semin. Funct. Equ. Approx. Convexity 3, 157--163 (2005; Zbl 1424.47126)
Precup, Radu Existence and localization results for semi-linear problems. (English) Zbl 1121.47050 An. Univ. Craiova, Ser. Mat. Inf. 32, 59-66 (2005). Reviewer: Peter Zabreiko (Minsk) MSC: 47J05 47H10 47J35 47N20 34G20 35G30 PDFBibTeX XMLCite \textit{R. Precup}, An. Univ. Craiova, Ser. Mat. Inf. 32, 59--66 (2005; Zbl 1121.47050)
O’Regan, Donal; Precup, Radu Compression-expansion fixed point theorem in two norms and applications. (English) Zbl 1078.47017 J. Math. Anal. Appl. 309, No. 2, 383-391 (2005). Reviewer: Mirosława Zima (Rzeszow) MSC: 47H10 47N20 45G10 47H07 47H30 PDFBibTeX XMLCite \textit{D. O'Regan} and \textit{R. Precup}, J. Math. Anal. Appl. 309, No. 2, 383--391 (2005; Zbl 1078.47017) Full Text: DOI