Erratum to “Single-machine scheduling problems with both deteriorating jobs and learning effects” [Appl. Math. Modell. 34 (2010) 2831–2839]

The aim of this paper is to show by counterexamples that Theorems 3–10 and Corollaries 2–5 in Wang et al. [Appl. Math. Model. 34 (2010) 2831–2839] are incorrect.     

Erratum to “Single machine past-sequence-dependent setup times scheduling with general position-dependent and time-dependent learning effects” [Appl. Math. Modell. 35 (2011) 1388–1395]

The aim of this paper is to show by a counterexample that Theorem 7 and Corollary 8 in Wang and Li [Appl. Math. Modell. 35 (2011) 1388–1395.] are incorrect.     

Erratum to “Fuzzy rough set model on two different universes and its application” [Appl. Math. Model. 35 (4) (2011) 1798–1809]

The aim of this paper is to correct two mistakes in [Appl. Math. Model. 35 (4) (2011) 1798–1809], which are: one of the properties of fuzzy rough set between two different universes and the definition of the upper approximation with the property for degree fuzzy rough set between two different universes.     

Erratum to “Inverse nodal problem for differential operator with eigenvalue in the boundary condition” [Appl. Math. Lett. 21 (2008) 1301–1305]

In this paper, some mistakes in the paper which is cited in the title are corrected. Fortunately, the mistakes do not affect the validity of the main results.