In this work, a (2 + 1)-dimensional Ito equation is investigated, which represents the generalization of the bilinear KdV equation. Abundant double-periodic soliton solutions to the (2 + 1)-dimensional Ito equation are presented by the Hirota bilinear form and a mixture of exponentials and trigonometric functions. The dynamic properties are described through some 3D graphics and contour graphics.

中文翻译：

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(2+1)维Ito方程的双周期孤子解

在这项工作中，研究了 (2 + 1) 维 Ito 方程，它代表了双线性 KdV 方程的推广。(2 + 1) 维 Ito 方程的丰富双周期孤子解由 Hirota 双线性形式以及指数函数和三角函数的混合给出。动态特性通过一些3D图形和轮廓图来描述。