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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 3022 | . 2 ⊢ (𝐴 ≠ 𝐶 ↔ 𝐵 ≠ 𝐶) |
| 4 | 1, 3 | mpbir 234 | 1 ⊢ 𝐴 ≠ 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1570 ≠ wne 2958 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-9 2153 ax-ext 2735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-ex 1810 df-cleq 2755 df-ne 2959 |
| This theorem is referenced by: eqnetrri 3029 notsep 5334 2on0 8464 1n0 8468 1n0OLD 8469 snnen2o 9201 noinfep 9625 card1 9950 fin23lem31 10322 s1nz 14641 bpoly4 16108 tan0 16202 nn0rppwr 16614 basendxnmulrndx 17344 plusgndxnmulrndx 17345 slotsbhcdif 17463 xrsnsgrp 21558 pzriprnglem4 21634 ustuqtop1 24398 iaa 26488 tan4thpi 26679 tan4thpiOLD 26680 ang180lem2 26975 mcubic 27012 quart1lem 27020 nogt01o 27860 slotsinbpsd 28710 slotslnbpsd 28711 ex-lcm 30809 9p10ne21 30821 cos9thpiminplylem5 34176 esumnul 34438 ballotth 34928 quad3 36162 bj-1upln0 37645 bj-2upln0 37659 bj-2upln1upl 37660 tan3rdpi 43113 sn-0ne2 43167 flt0 43369 flt4lem5e 43388 mncn0 43866 aaitgo 43889 stirlinglem11 46798 cjnpoly 47626 pgnbgreunbgrlem4 48884 sec0 50538 2p2ne5 50618 |
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