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| Mirrors > Home > MPE Home > Th. List > dfsdom2 | Structured version Visualization version GIF version | ||
| Description: Alternate definition of strict dominance. Compare Definition 3 of [Suppes] p. 97. (Contributed by NM, 31-Mar-1998.) |
| Ref | Expression |
|---|---|
| dfsdom2 | ⊢ ≺ = ( ≼ ∖ ◡ ≼ ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-sdom 8898 | . 2 ⊢ ≺ = ( ≼ ∖ ≈ ) | |
| 2 | sbthcl 9039 | . . 3 ⊢ ≈ = ( ≼ ∩ ◡ ≼ ) | |
| 3 | 2 | difeq2i 4077 | . 2 ⊢ ( ≼ ∖ ≈ ) = ( ≼ ∖ ( ≼ ∩ ◡ ≼ )) |
| 4 | difin 4226 | . 2 ⊢ ( ≼ ∖ ( ≼ ∩ ◡ ≼ )) = ( ≼ ∖ ◡ ≼ ) | |
| 5 | 1, 3, 4 | 3eqtri 2764 | 1 ⊢ ≺ = ( ≼ ∖ ◡ ≼ ) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∖ cdif 3900 ∩ cin 3902 ◡ccnv 5631 ≈ cen 8892 ≼ cdom 8893 ≺ csdm 8894 |
| 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-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-pow 5312 ax-pr 5379 ax-un 7690 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-id 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 |
| This theorem is referenced by: brsdom2 9041 |
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