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Published online by Cambridge University Press: 22 October 2024
A complete Reidemeister characterisation of welded links is a long-standing open problem. We present a Reidemeister theorem for a related class of four-dimensional links: solid ribbon torus links, that is, immersed solid tori in  $\mathbb {R}^4$ with only ribbon singularities, considered up to generalised ribbon isotopy.
$\mathbb {R}^4$ with only ribbon singularities, considered up to generalised ribbon isotopy.
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