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Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-axc11v | Structured version Visualization version GIF version |
Description: Version of axc11 2451 with a disjoint variable condition, which does not require ax-13 2389 nor ax-10 2144. Remark: the following theorems (hbae 2452, nfae 2454, hbnae 2453, nfnae 2455, hbnaes 2456) would need to be totally unbundled to be proved without ax-13 2389, hence would be simple consequences of ax-5 1910 or nfv 1914. (Contributed by BJ, 31-May-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
bj-axc11v | ⊢ (∀𝑥 𝑥 = 𝑦 → (∀𝑥𝜑 → ∀𝑦𝜑)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | axc11rv 2265 | . 2 ⊢ (∀𝑦 𝑦 = 𝑥 → (∀𝑥𝜑 → ∀𝑦𝜑)) | |
2 | 1 | bj-aecomsv 34134 | 1 ⊢ (∀𝑥 𝑥 = 𝑦 → (∀𝑥𝜑 → ∀𝑦𝜑)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∀wal 1534 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-12 2176 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1780 |
This theorem is referenced by: (None) |
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