| Mathbox for Peter Mazsa |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > epnsymrel | Structured version Visualization version GIF version | ||
| Description: The membership (epsilon) relation is not symmetric. (Contributed by AV, 18-Jun-2022.) |
| Ref | Expression |
|---|---|
| epnsymrel | ⊢ ¬ SymRel E |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | epnsym 9579 | . . . 4 ⊢ ◡ E ≠ E | |
| 2 | 1 | neii 2960 | . . 3 ⊢ ¬ ◡ E = E |
| 3 | 2 | intnanr 492 | . 2 ⊢ ¬ (◡ E = E ∧ Rel E ) |
| 4 | dfsymrel4 39262 | . 2 ⊢ ( SymRel E ↔ (◡ E = E ∧ Rel E )) | |
| 5 | 3, 4 | mtbir 326 | 1 ⊢ ¬ SymRel E |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ∧ wa 400 = wceq 1570 E cep 5562 ◡ccnv 5662 Rel wrel 5668 SymRel wsymrel 38822 |
| 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-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pr 5406 ax-reg 9555 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-br 5111 df-opab 5175 df-eprel 5563 df-fr 5616 df-xp 5669 df-rel 5670 df-cnv 5671 df-dm 5673 df-rn 5674 df-res 5675 df-symrel 39251 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |