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Mirrors > Home > ILE Home > Th. List > wdisj | GIF version |
Description: Extend wff notation to include the statement that a family of classes 𝐵(𝑥), for 𝑥 ∈ 𝐴, is a disjoint family. |
Ref | Expression |
---|---|
vx | setvar 𝑥 |
cA | class 𝐴 |
cB | class 𝐵 |
Ref | Expression |
---|---|
wdisj | wff Disj 𝑥 ∈ 𝐴 𝐵 |
Colors of variables: wff set class |
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