This note primarily delves into incompressible flow momentum equation and Surface of water waves and boundary condition and Variational Formulation.

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We collect working formulas for dyadic (outer) products, the double-dot contraction of tensors, and tensor–vector cross products expressed with the Levi-Civita symbol, and we…

We review the Levi-Civita symbol in arbitrary dimension, its role in defining the cross product and wedge product, introduce the Hodge star on differential forms, and clarify…

emoji Blobcat EmojiTieba EmojiQQ Emoji copy 复制行 示例代码对于单行内容，可以使用 copy 标签来实现复制功能： $ 1{% copy curl -s https://sh.xaox.cc/install | sh %} tab分栏 注意<tab> 里面的是标题…