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| Mirrors > Home > MPE Home > Th. List > nfinf | Structured version Visualization version GIF version | ||
| Description: Hypothesis builder for infimum. (Contributed by AV, 2-Sep-2020.) |
| Ref | Expression |
|---|---|
| nfinf.1 | ⊢ Ⅎ𝑥𝐴 |
| nfinf.2 | ⊢ Ⅎ𝑥𝐵 |
| nfinf.3 | ⊢ Ⅎ𝑥𝑅 |
| Ref | Expression |
|---|---|
| nfinf | ⊢ Ⅎ𝑥inf(𝐴, 𝐵, 𝑅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-inf 9404 | . 2 ⊢ inf(𝐴, 𝐵, 𝑅) = sup(𝐴, 𝐵, ◡𝑅) | |
| 2 | nfinf.1 | . . 3 ⊢ Ⅎ𝑥𝐴 | |
| 3 | nfinf.2 | . . 3 ⊢ Ⅎ𝑥𝐵 | |
| 4 | nfinf.3 | . . . 4 ⊢ Ⅎ𝑥𝑅 | |
| 5 | 4 | nfcnv 5866 | . . 3 ⊢ Ⅎ𝑥◡𝑅 |
| 6 | 2, 3, 5 | nfsup 9412 | . 2 ⊢ Ⅎ𝑥sup(𝐴, 𝐵, ◡𝑅) |
| 7 | 1, 6 | nfcxfr 2923 | 1 ⊢ Ⅎ𝑥inf(𝐴, 𝐵, 𝑅) |
| Colors of variables: wff setvar class |
| Syntax hints: Ⅎwnfc 2910 ◡ccnv 5662 supcsup 9401 infcinf 9402 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-pr 5406 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-br 5111 df-opab 5175 df-xp 5669 df-cnv 5671 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-sup 9403 df-inf 9404 |
| This theorem is referenced by: iundisj 25688 iundisjf 32912 iundisjfi 33119 nfwsuc 36286 nfwlim 36290 allbutfiinf 46114 infrpgernmpt 46159 liminflelimsuplem 46469 stoweidlem62 46756 fourierdlem31 46832 iunhoiioolem 47369 smfinf 47512 prmdvdsfmtnof1lem1 48313 |
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