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Mirrors > Home > MPE Home > Th. List > cflem | Structured version Visualization version Unicode version |
Description: A lemma used to simplify cofinality computations, showing the existence of the cardinal of an unbounded subset of a set . (Contributed by NM, 24-Apr-2004.) |
Ref | Expression |
---|---|
cflem |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssid 3624 | . . 3 | |
2 | ssid 3624 | . . . . 5 | |
3 | sseq2 3627 | . . . . . 6 | |
4 | 3 | rspcev 3309 | . . . . 5 |
5 | 2, 4 | mpan2 707 | . . . 4 |
6 | 5 | rgen 2922 | . . 3 |
7 | sseq1 3626 | . . . . 5 | |
8 | rexeq 3139 | . . . . . 6 | |
9 | 8 | ralbidv 2986 | . . . . 5 |
10 | 7, 9 | anbi12d 747 | . . . 4 |
11 | 10 | spcegv 3294 | . . 3 |
12 | 1, 6, 11 | mp2ani 714 | . 2 |
13 | fvex 6201 | . . . . . 6 | |
14 | 13 | isseti 3209 | . . . . 5 |
15 | 19.41v 1914 | . . . . 5 | |
16 | 14, 15 | mpbiran 953 | . . . 4 |
17 | 16 | exbii 1774 | . . 3 |
18 | excom 2042 | . . 3 | |
19 | 17, 18 | bitr3i 266 | . 2 |
20 | 12, 19 | sylib 208 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wa 384 wceq 1483 wex 1704 wcel 1990 wral 2912 wrex 2913 wss 3574 cfv 5888 ccrd 8761 |
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 ax-nul 4789 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-sn 4178 df-pr 4180 df-uni 4437 df-iota 5851 df-fv 5896 |
This theorem is referenced by: cfval 9069 cff 9070 cff1 9080 |
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