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Mathbox for Jonathan Ben-Naim |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > bnj1262 | Structured version Visualization version GIF version |
Description: First-order logic and set theory. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (New usage is discouraged.) |
Ref | Expression |
---|---|
bnj1262.1 | ⊢ 𝐴 ⊆ 𝐵 |
bnj1262.2 | ⊢ (𝜑 → 𝐶 = 𝐴) |
Ref | Expression |
---|---|
bnj1262 | ⊢ (𝜑 → 𝐶 ⊆ 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bnj1262.2 | . 2 ⊢ (𝜑 → 𝐶 = 𝐴) | |
2 | bnj1262.1 | . 2 ⊢ 𝐴 ⊆ 𝐵 | |
3 | 1, 2 | eqsstrdi 4002 | 1 ⊢ (𝜑 → 𝐶 ⊆ 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1542 ⊆ wss 3914 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-ext 2704 |
This theorem depends on definitions: df-bi 206 df-an 398 df-tru 1545 df-ex 1783 df-sb 2069 df-clab 2711 df-cleq 2725 df-clel 2811 df-v 3449 df-in 3921 df-ss 3931 |
This theorem is referenced by: bnj229 33560 bnj1128 33666 bnj1145 33669 |
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