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| Description: Equinumerosity relation. Compare Definition of [Enderton] p. 129. |
| Ref | Expression |
|---|---|
| bren.1 |
|
| Ref | Expression |
|---|---|
| bren |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bren.1 |
. 2
| |
| 2 | breng 5434 |
. 2
| |
| 3 | 1, 2 | ax-mp 7 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: domen 5438 ener 5469 en0 5482 ensn1 5483 en1 5485 ac6sfi 5509 canth2 5548 mapen 5585 ssenen 5598 phplem4 5605 php3 5609 ssfi 5630 unfilem3 5643 unifi 5648 fiint 5650 fodomfi 5656 numth2 5947 ruc 8818 infxpidmlem10 8830 infxpidmlem12 8832 infmap2lem1 8848 fbssint 10279 eqindhome 14895 finsschain 15373 fcluscomplem 15620 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-13 1311 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 ax-un 3790 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-rex 2110 df-v 2294 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-nul 2876 df-pw 3035 df-sn 3049 df-pr 3050 df-op 3053 df-uni 3178 df-br 3339 df-opab 3396 df-xp 4000 df-rel 4001 df-cnv 4002 df-dm 4004 df-rn 4005 df-fn 4009 df-f 4010 df-f1 4011 df-fo 4012 df-f1o 4013 df-en 5427 |