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Mirrors > Home > ILE Home > Th. List > Mathboxes > bdsbcALT | GIF version |
Description: Alternate proof of bdsbc 10649. (Contributed by BJ, 16-Oct-2019.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
bdcsbc.1 | ⊢ BOUNDED 𝜑 |
Ref | Expression |
---|---|
bdsbcALT | ⊢ BOUNDED [𝑦 / 𝑥]𝜑 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bdcsbc.1 | . . 3 ⊢ BOUNDED 𝜑 | |
2 | 1 | bdab 10629 | . 2 ⊢ BOUNDED 𝑦 ∈ {𝑥 ∣ 𝜑} |
3 | df-sbc 2816 | . 2 ⊢ ([𝑦 / 𝑥]𝜑 ↔ 𝑦 ∈ {𝑥 ∣ 𝜑}) | |
4 | 2, 3 | bd0r 10616 | 1 ⊢ BOUNDED [𝑦 / 𝑥]𝜑 |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1433 {cab 2067 [wsbc 2815 BOUNDED wbd 10603 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-bd0 10604 ax-bdsb 10613 |
This theorem depends on definitions: df-bi 115 df-clab 2068 df-sbc 2816 |
This theorem is referenced by: (None) |
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