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| Mirrors > Home > ILE Home > Th. List > entr3i | GIF version | ||
| Description: A chained equinumerosity inference. (Contributed by NM, 25-Sep-2004.) |
| Ref | Expression |
|---|---|
| entr3i.1 | ⊢ 𝐴 ≈ 𝐵 |
| entr3i.2 | ⊢ 𝐴 ≈ 𝐶 |
| Ref | Expression |
|---|---|
| entr3i | ⊢ 𝐵 ≈ 𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | entr3i.1 | . . 3 ⊢ 𝐴 ≈ 𝐵 | |
| 2 | 1 | ensymi 6961 | . 2 ⊢ 𝐵 ≈ 𝐴 |
| 3 | entr3i.2 | . 2 ⊢ 𝐴 ≈ 𝐶 | |
| 4 | 2, 3 | entri 6965 | 1 ⊢ 𝐵 ≈ 𝐶 |
| Colors of variables: wff set class |
| Syntax hints: class class class wbr 4089 ≈ cen 6912 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2203 ax-14 2204 ax-ext 2212 ax-sep 4208 ax-pow 4266 ax-pr 4301 ax-un 4532 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1810 df-eu 2081 df-mo 2082 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-ral 2514 df-rex 2515 df-v 2803 df-un 3203 df-in 3205 df-ss 3212 df-pw 3655 df-sn 3676 df-pr 3677 df-op 3679 df-uni 3895 df-br 4090 df-opab 4152 df-id 4392 df-xp 4733 df-rel 4734 df-cnv 4735 df-co 4736 df-dm 4737 df-rn 4738 df-res 4739 df-ima 4740 df-fun 5330 df-fn 5331 df-f 5332 df-f1 5333 df-fo 5334 df-f1o 5335 df-er 6707 df-en 6915 |
| This theorem is referenced by: xpomen 13039 sbthom 16693 |
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