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Mirrors > Home > MPE Home > Th. List > vsnid | Structured version Visualization version GIF version |
Description: A setvar variable is a member of its singleton (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Ref | Expression |
---|---|
vsnid | ⊢ 𝑥 ∈ {𝑥} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vex 3176 | . 2 ⊢ 𝑥 ∈ V | |
2 | 1 | snid 4155 | 1 ⊢ 𝑥 ∈ {𝑥} |
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