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Superstrong and other large cardinals are never Laver indestructible
Authors:Joan Bagaria  Joel David Hamkins  Konstantinos Tsaprounis  Toshimichi Usuba
Abstract:Superstrong cardinals are never Laver indestructible. Similarly, almost huge cardinals, huge cardinals, superhuge cardinals, rank-into-rank cardinals, extendible cardinals, 1-extendible cardinals, 0-extendible cardinals, weakly superstrong cardinals, uplifting cardinals, pseudo-uplifting cardinals, superstrongly unfoldable cardinals, Σn-reflecting cardinals, Σn-correct cardinals and Σn-extendible cardinals (all for n ≥  3) are never Laver indestructible. In fact, all these large cardinal properties are superdestructible: if κ exhibits any of them, with corresponding target θ, then in any forcing extension arising from nontrivial strategically <κ-closed forcing ({mathbb{Q} in V_theta}), the cardinal κ will exhibit none of the large cardinal properties with target θ or larger.
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