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JOURNALS // Teoreticheskaya i Matematicheskaya Fizika // Archive

TMF, 2026 Volume 226, Number 2, Pages 331–345 (Mi tmf11087)

The three-component coupled time-varying coefficient complex mKdV equation via the $\bar{\partial}$-dressing method

Tao Deng, Qi Chen, Chunxia Li

School of Mathematical Sciences, Capital Normal University, Beijing, China

Abstract: In this paper we focus on the application of the $\bar{\partial}$-dressing method to the three-component coupled time-varying coefficient complex mKdV equation. Based upon a $(4 \times 4)$-matrix $\bar{\partial}$-problem and two linear equations of the spectral transformation matrix, we derive the Lax pair and infinitely many conservation laws for the three-component coupled time-varying coefficient complex mKdV equation. Besides, we construct a hierarchy of the three-component coupled time-varying coefficient complex mKdV equation with a source term by making use of the recursion operator. We derive symmetry conditions of the spectral transformation matrix. We establish $N$-solution solutions and multi-pole solutions for the three-component coupled time-varying coefficient complex mKdV equation and express them in compact forms based on an explicit spectral transformation matrix.

Keywords: three-component coupled time-varying coefficient complex mKdV equation, $\bar{\partial}$-dressing method, Lax pair, conservation laws, soliton solutions, multi-pole solutions.

MSC: 35C08, 35K10, 35Q51

Received: 28.09.2025
Revised: 27.10.2025

DOI: 10.4213/tmf11087


 English version:
Theoretical and Mathematical Physics, 2026, 226:2, 284–297


© Steklov Math. Inst. of RAS, 2026