A Δ-move.|@|~(^,^)~|@||@|~(^,^)~|@|Reidemeister moves.|@|~(^,^)~|@|Virtual moves.|@|~(^,^)~|@||@|~(^,^)~|@|State expansion.|@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@|Polar link diagrams.|@|~(^,^)~|@||@|~(^,^)~|@|Forbidden moves.|@|~(^,^)~|@|A C_n-move|@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@|The sign of a crossing.|@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@||@|~(^,^)~|@|

Kyungpook Mathematical Journal 2018;58:183~202 https://doi.org/10.5666/KMJ.2018.58.1.183

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