Kragujevac Journal of Mathematics, vol.48, no.6, pp.811-826, 2024 (ESCI)
                        
                            
                        
                        
            
In this article, we discuss a conformable fractional Sturm-Liouville boundary-value problem on the whole line. We prove the existence of a spectral function for the singular conformable fractional Sturm-Lioville problem. Further, we establish a Parseval equality and spectral expansion formula by terms of the spectral function for conformable fractional Sturm-Liouville problem on the whole line.