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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 2997 | . 2 ⊢ (𝐴 ≠ 𝐶 ↔ 𝐵 ≠ 𝐶) |
| 4 | 1, 3 | mpbir 231 | 1 ⊢ 𝐴 ≠ 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ≠ wne 2933 |
| 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 1912 ax-6 1969 ax-7 2010 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 df-ne 2934 |
| This theorem is referenced by: eqnetrri 3004 notzfaus 5310 2on0 8421 1n0 8425 snnen2o 9157 noinfep 9581 card1 9892 fin23lem31 10265 s1nz 14543 bpoly4 15994 tan0 16088 nn0rppwr 16500 basendxnmulrndx 17228 plusgndxnmulrndx 17229 slotsbhcdif 17347 xrsnsgrp 21374 pzriprnglem4 21451 ustuqtop1 24197 iaa 26301 tan4thpi 26491 tan4thpiOLD 26492 ang180lem2 26788 mcubic 26825 quart1lem 26833 nogt01o 27676 slotsinbpsd 28525 slotslnbpsd 28526 ex-lcm 30545 9p10ne21 30557 cos9thpiminplylem5 33963 esumnul 34225 ballotth 34715 quad3 35883 bj-1upln0 37254 bj-2upln0 37268 bj-2upln1upl 37269 tan3rdpi 42719 sn-0ne2 42773 flt0 42992 flt4lem5e 43011 mncn0 43493 aaitgo 43516 stirlinglem11 46439 nthrucw 47241 cjnpoly 47246 pgnbgreunbgrlem4 48476 sec0 50116 2p2ne5 50154 |
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