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| Mirrors > Home > MPE Home > Th. List > entr2i | Structured version Visualization version GIF version | ||
| Description: A chained equinumerosity inference. (Contributed by NM, 25-Sep-2004.) |
| Ref | Expression |
|---|---|
| entr2i.1 | ⊢ 𝐴 ≈ 𝐵 |
| entr2i.2 | ⊢ 𝐵 ≈ 𝐶 |
| Ref | Expression |
|---|---|
| entr2i | ⊢ 𝐶 ≈ 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | entr2i.1 | . . 3 ⊢ 𝐴 ≈ 𝐵 | |
| 2 | entr2i.2 | . . 3 ⊢ 𝐵 ≈ 𝐶 | |
| 3 | 1, 2 | entri 9042 | . 2 ⊢ 𝐴 ≈ 𝐶 |
| 4 | 3 | ensymi 9038 | 1 ⊢ 𝐶 ≈ 𝐴 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: class class class wbr 5102 ≈ cen 8977 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-pow 5327 ax-pr 5391 ax-un 7755 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-er 8724 df-en 8981 |
| This theorem is used by: nnenom 14130 bitsf1 16625 odinf 19786 re2ndc 25129 opnmblALT 25933 mbfimaopnlem 25985 poimirlem32 38679 |
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