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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 8924 | . 2 ⊢ ≺ = ( ≼ ∖ ≈ ) | |
| 2 | sbthcl 9065 | . . 3 ⊢ ≈ = ( ≼ ∩ ◡ ≼ ) | |
| 3 | 2 | difeq2i 4075 | . 2 ⊢ ( ≼ ∖ ≈ ) = ( ≼ ∖ ( ≼ ∩ ◡ ≼ )) |
| 4 | difin 4222 | . 2 ⊢ ( ≼ ∖ ( ≼ ∩ ◡ ≼ )) = ( ≼ ∖ ◡ ≼ ) | |
| 5 | 1, 3, 4 | 3eqtri 2788 | 1 ⊢ ≺ = ( ≼ ∖ ◡ ≼ ) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1559 ∖ cdif 3899 ∩ cin 3901 ◡ccnv 5642 ≈ cen 8918 ≼ cdom 8919 ≺ csdm 8920 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-pow 5319 ax-pr 5387 ax-un 7713 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-br 5098 df-opab 5160 df-id 5538 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-fun 6518 df-fn 6519 df-f 6520 df-f1 6521 df-fo 6522 df-f1o 6523 df-er 8672 df-en 8922 df-dom 8923 df-sdom 8924 |
| This theorem is referenced by: brsdom2 9067 |
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