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Mirrors > Home > MPE Home > Th. List > Mathboxes > trpredeq2 | Structured version Visualization version Unicode version |
Description: Equality theorem for transitive predecessors. (Contributed by Scott Fenton, 2-Feb-2011.) |
Ref | Expression |
---|---|
trpredeq2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | predeq2 5683 | . . . . . . 7 | |
2 | 1 | iuneq2d 4547 | . . . . . 6 |
3 | 2 | mpteq2dv 4745 | . . . . 5 |
4 | predeq2 5683 | . . . . 5 | |
5 | rdgeq12 7509 | . . . . . 6 | |
6 | 5 | reseq1d 5395 | . . . . 5 |
7 | 3, 4, 6 | syl2anc 693 | . . . 4 |
8 | 7 | rneqd 5353 | . . 3 |
9 | 8 | unieqd 4446 | . 2 |
10 | df-trpred 31718 | . 2 | |
11 | df-trpred 31718 | . 2 | |
12 | 9, 10, 11 | 3eqtr4g 2681 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wa 384 wceq 1483 cvv 3200 cuni 4436 ciun 4520 cmpt 4729 crn 5115 cres 5116 cpred 5679 com 7065 crdg 7505 ctrpred 31717 |
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-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
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-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-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-xp 5120 df-cnv 5122 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-iota 5851 df-fv 5896 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-trpred 31718 |
This theorem is referenced by: trpredeq2d 31724 |
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