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Mirrors > Home > MPE Home > Th. List > Mathboxes > ex-gt | Structured version Visualization version GIF version |
Description: Simple example of >, in this case, 0 is not greater than 0. This is useful as an example, and helps us gain confidence that we've correctly defined the symbol. (Contributed by David A. Wheeler, 1-Jan-2017.) (New usage is discouraged.) |
Ref | Expression |
---|---|
ex-gt | ⊢ ¬ 0 > 0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0re 11212 | . . 3 ⊢ 0 ∈ ℝ | |
2 | 1 | ltnri 11319 | . 2 ⊢ ¬ 0 < 0 |
3 | c0ex 11204 | . . 3 ⊢ 0 ∈ V | |
4 | 3, 3 | gt-lth 47725 | . 2 ⊢ (0 > 0 ↔ 0 < 0) |
5 | 2, 4 | mtbir 322 | 1 ⊢ ¬ 0 > 0 |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 class class class wbr 5147 0cc0 11106 < clt 11244 > cgt 47719 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-i2m1 11174 ax-rnegex 11177 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-br 5148 df-opab 5210 df-mpt 5231 df-id 5573 df-po 5587 df-so 5588 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-er 8699 df-en 8936 df-dom 8937 df-sdom 8938 df-pnf 11246 df-mnf 11247 df-ltxr 11249 df-gt 47721 |
This theorem is referenced by: (None) |
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