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So, apart from the traditional Von Neumann universe, there is set-theoretic multiverse, which contains configurations of axioms and theories instead of belonging to one theory. A set-theoretic multiverse can contain a lot, even unbounded and transfinite amount of Von Neumann universes.
Since it is like that, the universes are independent in operations. Operations within the Von Neumann universes will not affect and cannot reach the set-theoretic multiverse's total structure as the axioms are literally different across it, which sounds pretty 1-A.
A set-theoretic multiverse can also contain different things, and there are theories like MK (Which can iterate over proper classes) and higher-order set theories (Can iterate over relations, meta-relations, etc. depending on the order, modifying over those logical structures instead of just modifying elements like Low 1-A do), you can just put different theories with different foundations and orders into a set-theoretic multiverse, even if they are not compatible (Like ZFC with CH and ZFC without CH in one set-theoretic multiverse).
So will a set-theoretic multiverse be 1-A given sufficient structures (like including class theories similar to MK) and sufficiently high order (perhaps transfinite orders)? It may also be possible to model Modal Realism using a set-theoretic multiverse by modeling worlds using universes and universe clusters (A set-theoretic multiverse can contain every orders, and may model every theories within itself), which is more High 1-A.
Since it is like that, the universes are independent in operations. Operations within the Von Neumann universes will not affect and cannot reach the set-theoretic multiverse's total structure as the axioms are literally different across it, which sounds pretty 1-A.
A set-theoretic multiverse can also contain different things, and there are theories like MK (Which can iterate over proper classes) and higher-order set theories (Can iterate over relations, meta-relations, etc. depending on the order, modifying over those logical structures instead of just modifying elements like Low 1-A do), you can just put different theories with different foundations and orders into a set-theoretic multiverse, even if they are not compatible (Like ZFC with CH and ZFC without CH in one set-theoretic multiverse).
So will a set-theoretic multiverse be 1-A given sufficient structures (like including class theories similar to MK) and sufficiently high order (perhaps transfinite orders)? It may also be possible to model Modal Realism using a set-theoretic multiverse by modeling worlds using universes and universe clusters (A set-theoretic multiverse can contain every orders, and may model every theories within itself), which is more High 1-A.
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