Dynamics of complexiton, Y-type soliton and interaction solutions to the (3 + 1)-dimensional Kudryashov-Sinelshchikov equation in liquid with gas bubbles.

• The complexiton solutions are obtained by the linear superposition principle and weight algorithm. • The Y-type soliton solutions are extracted by imposing the resonance conditions on the N-soliton solutions. • Two different types of the interaction solutions are also explored by exerting the test function method and symbolic computation. • The graphical representations of the corresponding solutions are presented to reveal the dynamical characteristics. • The attained outcomes of this article are all new and can enable us make sense of the physical behaviors of the (3 + 1)-dimensional KSE better. This paper focuses on some novel exact solutions of the (3 + 1)-dimensional Kudryashov-Sinelshchikov equation (KSE). Based on the linear superposition principle (LSP) and weight algorithm (WA), we construct the complexiton solutions by introducing the pairs of the conjugate parameters. Besides, the Y -type soliton solutions are extracted by imposing the resonant conditions on the N -soliton solutions. Finally, two different types of the interaction solutions (ISs) are also explored by exerting the test function method and symbolic computation. The graphical representations of the corresponding solutions are presented to reveal the dynamical characteristics. To the best of our knowledge, the attained outcomes of this article are brand new and have never been reported in other literature, and can enable us make sense of the physical behaviors of the (3 + 1)-dimensional KSE better. [ABSTRACT FROM AUTHOR]