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تسجيل مستخدم جديدRibbon-moves for 2-knots with 1-handles attached and Khovanov-Jacobsson numbers
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J. Scott Carter
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We prove that a crossing change along a double point circle on a 2-knot is realized by ribbon-moves for a knotted torus obtained from the 2-knot by attaching a 1-handle. It follows that any 2-knots for which the crossing change is an unknotting operation, such as ribbon 2-knots and twist-spun knots, have trivial Khovanov-Jacobsson number.
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