Regularized Trace of a Sturm–Liouville Operator on a Curve with a Regular Singularity on the Chord

Coincidence Theory of a Nonlinear Periodic Sturm–Liouville System and Its Applications

“…The second focuses on the investigation of some generalized S-L equations, such as the fractional differential S-L equation (see [13][14][15][17][18][19][20][21][22][23][24]) and the S-L equation on time scales (see [25][26][27][28][29][30][31][32][33][34]). The third deals with the S-L problems with certain singularity (see [35][36][37][38]) or discontinuity (see [11,12]).…”