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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 3080 | . 2 ⊢ (𝐴 ≠ 𝐶 ↔ 𝐵 ≠ 𝐶) |
4 | 1, 3 | mpbir 233 | 1 ⊢ 𝐴 ≠ 𝐶 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1533 ≠ wne 3016 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-9 2120 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1777 df-cleq 2814 df-ne 3017 |
This theorem is referenced by: eqnetrri 3087 notzfaus 5255 notzfausOLD 5256 2on0 8107 1n0 8113 noinfep 9117 card1 9391 fin23lem31 9759 s1nz 13955 bpoly4 15407 tan0 15498 resslem 16551 basendxnplusgndx 16602 plusgndxnmulrndx 16611 basendxnmulrndx 16612 slotsbhcdif 16687 symgvalstruct 18519 rmodislmod 19696 cnfldfun 20551 xrsnsgrp 20575 matvsca 21019 ustuqtop1 22844 iaa 24908 tan4thpi 25094 ang180lem2 25382 mcubic 25419 quart1lem 25427 ex-lcm 28231 9p10ne21 28243 resvlem 30899 esumnul 31302 ballotth 31790 quad3 32908 bj-1upln0 34316 bj-2upln0 34330 bj-2upln1upl 34331 nn0rppwr 39175 sn-0ne2 39229 mncn0 39732 aaitgo 39755 stirlinglem11 42362 sec0 44852 2p2ne5 44892 |
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