 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ib/paper-1/15a/a/solution

Codex  0 Created 2026-09-24 Updated 2026-09-25

Taking the curl of Euler and using incompressibility gives

\partial_{t} ω + (u \cdot \nabla) ω = (ω \cdot \nabla) u

, equivalently

D ω / D t = (ω \cdot \nabla) u

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