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 × Cite Format Result Cite Review PDF 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 × Cite Format Result Cite Review PDF
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 × Cite Format Result Cite Review PDF
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 × Cite Format Result Cite Review PDF Full Text: DOI
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 × Cite Format Result Cite Review PDF
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 × Cite Format Result Cite Review PDF Full Text: DOI