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Mirrors > Home > MPE Home > Th. List > sup0riota | Structured version Visualization version Unicode version |
Description: The supremum of an empty set is the smallest element of the base set. (Contributed by AV, 4-Sep-2020.) |
Ref | Expression |
---|---|
sup0riota |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 22 | . . 3 | |
2 | 1 | supval2 8361 | . 2 |
3 | ral0 4076 | . . . . . 6 | |
4 | 3 | biantrur 527 | . . . . 5 |
5 | rex0 3938 | . . . . . . 7 | |
6 | imnot 355 | . . . . . . 7 | |
7 | 5, 6 | ax-mp 5 | . . . . . 6 |
8 | 7 | ralbii 2980 | . . . . 5 |
9 | 4, 8 | bitr3i 266 | . . . 4 |
10 | 9 | a1i 11 | . . 3 |
11 | 10 | riotabidv 6613 | . 2 |
12 | 2, 11 | eqtrd 2656 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wb 196 wa 384 wceq 1483 wral 2912 wrex 2913 c0 3915 class class class wbr 4653 wor 5034 crio 6610 csup 8346 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-po 5035 df-so 5036 df-iota 5851 df-riota 6611 df-sup 8348 |
This theorem is referenced by: sup0 8372 |
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