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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 8002 | . . . 4 ⊢ ≈ Er V | |
2 | 1 | a1i 11 | . . 3 ⊢ (⊤ → ≈ Er V) |
3 | 2 | ertr 7757 | . 2 ⊢ (⊤ → ((𝐴 ≈ 𝐵 ∧ 𝐵 ≈ 𝐶) → 𝐴 ≈ 𝐶)) |
4 | 3 | trud 1493 | 1 ⊢ ((𝐴 ≈ 𝐵 ∧ 𝐵 ≈ 𝐶) → 𝐴 ≈ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 ⊤wtru 1484 Vcvv 3200 class class class wbr 4653 Er wer 7739 ≈ cen 7952 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-er 7742 df-en 7956 |
This theorem is referenced by: entri 8010 en2sn 8037 xpsnen2g 8053 omxpen 8062 enen1 8100 enen2 8101 map2xp 8130 pwen 8133 ssenen 8134 phplem4 8142 php3 8146 snnen2o 8149 fineqvlem 8174 ssfi 8180 en1eqsn 8190 dif1en 8193 unfi 8227 unxpwdom2 8493 infdifsn 8554 infdiffi 8555 karden 8758 xpnum 8777 cardidm 8785 ficardom 8787 carden2a 8792 carden2b 8793 isinffi 8818 pm54.43 8826 pr2ne 8828 en2eqpr 8830 en2eleq 8831 infxpenlem 8836 infxpidm2 8840 mappwen 8935 finnisoeu 8936 cdaen 8995 cdaenun 8996 cda1dif 8998 cdaassen 9004 mapcdaen 9006 pwcdaen 9007 infcda1 9015 pwcdaidm 9017 cardacda 9020 ficardun 9024 pwsdompw 9026 infxp 9037 infmap2 9040 ackbij1lem5 9046 ackbij1lem9 9050 ackbij1b 9061 fin4en1 9131 isfin4-3 9137 fin23lem23 9148 domtriomlem 9264 axcclem 9279 carden 9373 alephadd 9399 gchcdaidm 9490 gchxpidm 9491 gchpwdom 9492 gchhar 9501 tskuni 9605 fzen2 12768 hashdvds 15480 unbenlem 15612 unben 15613 4sqlem11 15659 pmtrfconj 17886 psgnunilem1 17913 odinf 17980 dfod2 17981 sylow2blem1 18035 sylow2 18041 frlmisfrlm 20187 hmphindis 21600 dyadmbl 23368 padct 29497 f1ocnt 29559 volmeas 30294 sconnpi1 31221 lzenom 37333 fiphp3d 37383 frlmpwfi 37668 isnumbasgrplem3 37675 fiuneneq 37775 rp-isfinite5 37863 enrelmap 38291 enrelmapr 38292 enmappw 38293 uspgrymrelen 41761 |
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