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Mirrors > Home > MPE Home > Th. List > wdomimag | Structured version Visualization version GIF version |
Description: A set is weakly dominant over its image under any function. (Contributed by Stefan O'Rear, 14-Feb-2015.) (Revised by Mario Carneiro, 25-Jun-2015.) |
Ref | Expression |
---|---|
wdomimag | ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ 𝑉) → (𝐹 “ 𝐴) ≼* 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | funimaexg 6554 | . 2 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ 𝑉) → (𝐹 “ 𝐴) ∈ V) | |
2 | wdomima2g 9413 | . 2 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ 𝑉 ∧ (𝐹 “ 𝐴) ∈ V) → (𝐹 “ 𝐴) ≼* 𝐴) | |
3 | 1, 2 | mpd3an3 1461 | 1 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ 𝑉) → (𝐹 “ 𝐴) ≼* 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∈ wcel 2105 Vcvv 3441 class class class wbr 5085 “ cima 5608 Fun wfun 6457 ≼* cwdom 9391 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2708 ax-rep 5222 ax-sep 5236 ax-nul 5243 ax-pow 5301 ax-pr 5365 ax-un 7626 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2815 df-nfc 2887 df-ne 2942 df-ral 3063 df-rex 3072 df-rab 3405 df-v 3443 df-dif 3899 df-un 3901 df-in 3903 df-ss 3913 df-nul 4267 df-if 4470 df-pw 4545 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4849 df-br 5086 df-opab 5148 df-mpt 5169 df-id 5505 df-xp 5611 df-rel 5612 df-cnv 5613 df-co 5614 df-dm 5615 df-rn 5616 df-res 5617 df-ima 5618 df-fun 6465 df-fn 6466 df-f 6467 df-f1 6468 df-fo 6469 df-f1o 6470 df-en 8780 df-dom 8781 df-sdom 8782 df-wdom 9392 |
This theorem is referenced by: hsmexlem4 10255 |
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