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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 1542 ≠ wne 2932 |
| 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 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2728 df-ne 2933 |
| This theorem is referenced by: eqnetrri 3003 notzfaus 5305 2on0 8419 1n0 8423 snnen2o 9155 noinfep 9581 card1 9892 fin23lem31 10265 s1nz 14570 bpoly4 16024 tan0 16118 nn0rppwr 16530 basendxnmulrndx 17259 plusgndxnmulrndx 17260 slotsbhcdif 17378 xrsnsgrp 21388 pzriprnglem4 21464 ustuqtop1 24206 iaa 26291 tan4thpi 26478 tan4thpiOLD 26479 ang180lem2 26774 mcubic 26811 quart1lem 26819 nogt01o 27660 slotsinbpsd 28509 slotslnbpsd 28510 ex-lcm 30528 9p10ne21 30540 cos9thpiminplylem5 33930 esumnul 34192 ballotth 34682 quad3 35852 bj-1upln0 37316 bj-2upln0 37330 bj-2upln1upl 37331 tan3rdpi 42784 sn-0ne2 42838 flt0 43070 flt4lem5e 43089 mncn0 43567 aaitgo 43590 stirlinglem11 46512 nthrucw 47316 cjnpoly 47337 pgnbgreunbgrlem4 48595 sec0 50235 2p2ne5 50273 |
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