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Mirrors > Home > MPE Home > Th. List > eqnetri | Structured version Visualization version GIF version |
Description: Substitution of equal classes into an inequality. (Contributed by NM, 4-Jul-2012.) |
Ref | Expression |
---|---|
eqnetr.1 | ⊢ 𝐴 = 𝐵 |
eqnetr.2 | ⊢ 𝐵 ≠ 𝐶 |
Ref | Expression |
---|---|
eqnetri | ⊢ 𝐴 ≠ 𝐶 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqnetr.2 | . 2 ⊢ 𝐵 ≠ 𝐶 | |
2 | eqnetr.1 | . . 3 ⊢ 𝐴 = 𝐵 | |
3 | 2 | neeq1i 3051 | . 2 ⊢ (𝐴 ≠ 𝐶 ↔ 𝐵 ≠ 𝐶) |
4 | 1, 3 | mpbir 234 | 1 ⊢ 𝐴 ≠ 𝐶 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 ≠ wne 2987 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-9 2121 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-ex 1782 df-cleq 2791 df-ne 2988 |
This theorem is referenced by: eqnetrri 3058 notzfaus 5227 notzfausOLD 5228 2on0 8096 1n0 8102 noinfep 9107 card1 9381 fin23lem31 9754 s1nz 13952 bpoly4 15405 tan0 15496 resslem 16549 basendxnplusgndx 16600 plusgndxnmulrndx 16609 basendxnmulrndx 16610 slotsbhcdif 16685 symgvalstruct 18517 rmodislmod 19695 cnfldfun 20103 xrsnsgrp 20127 matvsca 21021 ustuqtop1 22847 iaa 24921 tan4thpi 25107 ang180lem2 25396 mcubic 25433 quart1lem 25441 ex-lcm 28243 9p10ne21 28255 resvlem 30955 esumnul 31417 ballotth 31905 quad3 33026 bj-1upln0 34445 bj-2upln0 34459 bj-2upln1upl 34460 nn0rppwr 39490 sn-0ne2 39544 mncn0 40083 aaitgo 40106 mnringnmulrd 40922 stirlinglem11 42726 sec0 45286 2p2ne5 45326 |
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