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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 2996 | . 2 ⊢ (𝐴 ≠ 𝐶 ↔ 𝐵 ≠ 𝐶) |
| 4 | 1, 3 | mpbir 231 | 1 ⊢ 𝐴 ≠ 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ≠ wne 2932 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-9 2123 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-cleq 2728 df-ne 2933 |
| This theorem is referenced by: eqnetrri 3003 notzfaus 5308 2on0 8411 1n0 8415 snnen2o 9145 noinfep 9569 card1 9880 fin23lem31 10253 s1nz 14531 bpoly4 15982 tan0 16076 nn0rppwr 16488 basendxnmulrndx 17216 plusgndxnmulrndx 17217 slotsbhcdif 17335 xrsnsgrp 21362 pzriprnglem4 21439 ustuqtop1 24185 iaa 26289 tan4thpi 26479 tan4thpiOLD 26480 ang180lem2 26776 mcubic 26813 quart1lem 26821 nogt01o 27664 slotsinbpsd 28513 slotslnbpsd 28514 ex-lcm 30533 9p10ne21 30545 cos9thpiminplylem5 33943 esumnul 34205 ballotth 34695 quad3 35864 bj-1upln0 37210 bj-2upln0 37224 bj-2upln1upl 37225 tan3rdpi 42607 sn-0ne2 42661 flt0 42880 flt4lem5e 42899 mncn0 43381 aaitgo 43404 stirlinglem11 46328 nthrucw 47130 cjnpoly 47135 pgnbgreunbgrlem4 48365 sec0 50005 2p2ne5 50043 |
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