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    Proper classes in NBG have well-defined membership condit... — Carmelics
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    Supports→Alternative foundational systems such as von Neumann–Bernays–Gödel (NBG) set theory formally accommodate proper classes, including the class of all cardinals, as legitimate mathematical objects with determinate extensions.

    Proper classes in NBG have well-defined membership conditions and satisfy the axioms governing their behavior, making them mathematically rigorous objects.

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    Alternative foundational systems such as von Neumann–Bernays–Gödel (NBG) set the...

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    Alternative foundational systems such as von Neumann–Bernays–Gödel (NBG) set the...

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