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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 2998 | . 2 ⊢ (𝐴 ≠ 𝐶 ↔ 𝐵 ≠ 𝐶) |
| 4 | 1, 3 | mpbir 232 | 1 ⊢ 𝐴 ≠ 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 ≠ wne 2934 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-9 2129 ax-ext 2711 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-ex 1787 df-cleq 2731 df-ne 2935 |
| This theorem is referenced by: eqnetrri 3005 notzfaus 5292 2on0 8409 1n0 8413 snnen2o 9145 noinfep 9572 card1 9883 fin23lem31 10256 s1nz 14561 bpoly4 16015 tan0 16109 nn0rppwr 16521 basendxnmulrndx 17250 plusgndxnmulrndx 17251 slotsbhcdif 17369 xrsnsgrp 21383 pzriprnglem4 21459 ustuqtop1 24224 iaa 26309 tan4thpi 26496 tan4thpiOLD 26497 ang180lem2 26792 mcubic 26829 quart1lem 26837 nogt01o 27678 slotsinbpsd 28527 slotslnbpsd 28528 ex-lcm 30546 9p10ne21 30558 cos9thpiminplylem5 33970 esumnul 34232 ballotth 34722 quad3 35898 bj-1upln0 37362 bj-2upln0 37376 bj-2upln1upl 37377 tan3rdpi 42829 sn-0ne2 42883 flt0 43087 flt4lem5e 43106 mncn0 43584 aaitgo 43607 stirlinglem11 46527 nthrucw 47331 cjnpoly 47352 pgnbgreunbgrlem4 48610 sec0 50250 2p2ne5 50288 |
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