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Mirrors > Home > MPE Home > Th. List > entr | Structured version Visualization version GIF version |
Description: Transitivity of equinumerosity. Theorem 3 of [Suppes] p. 92. (Contributed by NM, 9-Jun-1998.) |
Ref | Expression |
---|---|
entr | ⊢ ((𝐴 ≈ 𝐵 ∧ 𝐵 ≈ 𝐶) → 𝐴 ≈ 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ener 7888 | . . . 4 ⊢ ≈ Er V | |
2 | 1 | a1i 11 | . . 3 ⊢ (⊤ → ≈ Er V) |
3 | 2 | ertr 7644 | . 2 ⊢ (⊤ → ((𝐴 ≈ 𝐵 ∧ 𝐵 ≈ 𝐶) → 𝐴 ≈ 𝐶)) |
4 | 3 | trud 1484 | 1 ⊢ ((𝐴 ≈ 𝐵 ∧ 𝐵 ≈ 𝐶) → 𝐴 ≈ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 ⊤wtru 1476 Vcvv 3173 class class class wbr 4583 Er wer 7626 ≈ cen 7838 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-er 7629 df-en 7842 |
This theorem is referenced by: entri 7896 en2sn 7922 xpsnen2g 7938 omxpen 7947 enen1 7985 enen2 7986 map2xp 8015 pwen 8018 ssenen 8019 phplem4 8027 php3 8031 snnen2o 8034 fineqvlem 8059 ssfi 8065 en1eqsn 8075 dif1en 8078 unfi 8112 unxpwdom2 8376 infdifsn 8437 infdiffi 8438 karden 8641 xpnum 8660 cardidm 8668 ficardom 8670 carden2a 8675 carden2b 8676 isinffi 8701 pm54.43 8709 pr2ne 8711 en2eqpr 8713 en2eleq 8714 infxpenlem 8719 infxpidm2 8723 mappwen 8818 finnisoeu 8819 cdaen 8878 cdaenun 8879 cda1dif 8881 cdaassen 8887 mapcdaen 8889 pwcdaen 8890 infcda1 8898 pwcdaidm 8900 cardacda 8903 ficardun 8907 pwsdompw 8909 infxp 8920 infmap2 8923 ackbij1lem5 8929 ackbij1lem9 8933 ackbij1b 8944 fin4en1 9014 isfin4-3 9020 fin23lem23 9031 domtriomlem 9147 axcclem 9162 carden 9252 alephadd 9278 gchcdaidm 9369 gchxpidm 9370 gchpwdom 9371 gchhar 9380 tskuni 9484 fzen2 12630 isprm2lem 15232 hashdvds 15318 unbenlem 15450 unben 15451 4sqlem11 15497 pmtrfconj 17709 psgnunilem1 17736 odinf 17803 dfod2 17804 sylow2blem1 17858 sylow2 17864 frlmisfrlm 20006 hmphindis 21410 dyadmbl 23174 padct 28885 f1ocnt 28946 volmeas 29621 sconpi1 30475 lzenom 36351 fiphp3d 36401 frlmpwfi 36686 isnumbasgrplem3 36694 fiuneneq 36794 rp-isfinite5 36882 enrelmap 37311 enrelmapr 37312 enmappw 37313 |
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