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Mirrors > Home > MPE Home > Th. List > 7re | Structured version Visualization version GIF version |
Description: The number 7 is real. (Contributed by NM, 27-May-1999.) |
Ref | Expression |
---|---|
7re | ⊢ 7 ∈ ℝ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-7 11708 | . 2 ⊢ 7 = (6 + 1) | |
2 | 6re 11730 | . . 3 ⊢ 6 ∈ ℝ | |
3 | 1re 10644 | . . 3 ⊢ 1 ∈ ℝ | |
4 | 2, 3 | readdcli 10659 | . 2 ⊢ (6 + 1) ∈ ℝ |
5 | 1, 4 | eqeltri 2912 | 1 ⊢ 7 ∈ ℝ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2113 (class class class)co 7159 ℝcr 10539 1c1 10541 + caddc 10543 6c6 11699 7c7 11700 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-1cn 10598 ax-icn 10599 ax-addcl 10600 ax-addrcl 10601 ax-mulcl 10602 ax-mulrcl 10603 ax-i2m1 10608 ax-1ne0 10609 ax-rrecex 10612 ax-cnre 10613 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ne 3020 df-ral 3146 df-rex 3147 df-rab 3150 df-v 3499 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-nul 4295 df-if 4471 df-sn 4571 df-pr 4573 df-op 4577 df-uni 4842 df-br 5070 df-iota 6317 df-fv 6366 df-ov 7162 df-2 11703 df-3 11704 df-4 11705 df-5 11706 df-6 11707 df-7 11708 |
This theorem is referenced by: 8re 11736 8pos 11752 5lt7 11827 4lt7 11828 3lt7 11829 2lt7 11830 1lt7 11831 7lt8 11832 6lt8 11833 7lt9 11840 6lt9 11841 7lt10 12234 6lt10 12235 bposlem8 25870 lgsdir2lem1 25904 hgt750lem2 31927 hgt750leme 31933 problem4 32915 mod42tp1mod8 43774 stgoldbwt 43948 sbgoldbwt 43949 nnsum3primesle9 43966 nnsum4primesoddALTV 43969 evengpoap3 43971 bgoldbtbndlem1 43977 bgoldbtbnd 43981 |
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