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Mirrors > Home > MPE Home > Th. List > rexneg | Structured version Visualization version Unicode version |
Description: Minus a real number. Remark [BourbakiTop1] p. IV.15. (Contributed by FL, 26-Dec-2011.) (Proof shortened by Mario Carneiro, 20-Aug-2015.) |
Ref | Expression |
---|---|
rexneg |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-xneg 11432 |
. 2
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2 | renepnf 9706 |
. . . 4
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3 | ifnefalse 3884 |
. . . 4
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4 | 2, 3 | syl 17 |
. . 3
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5 | renemnf 9707 |
. . . 4
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6 | ifnefalse 3884 |
. . . 4
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7 | 5, 6 | syl 17 |
. . 3
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8 | 4, 7 | eqtrd 2505 |
. 2
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9 | 1, 8 | syl5eq 2517 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1677 ax-4 1690 ax-5 1766 ax-6 1813 ax-7 1859 ax-8 1906 ax-9 1913 ax-10 1932 ax-11 1937 ax-12 1950 ax-13 2104 ax-ext 2451 ax-sep 4518 ax-nul 4527 ax-pow 4579 ax-pr 4639 ax-un 6602 ax-resscn 9614 |
This theorem depends on definitions: df-bi 190 df-or 377 df-an 378 df-3an 1009 df-tru 1455 df-ex 1672 df-nf 1676 df-sb 1806 df-eu 2323 df-mo 2324 df-clab 2458 df-cleq 2464 df-clel 2467 df-nfc 2601 df-ne 2643 df-nel 2644 df-ral 2761 df-rex 2762 df-rab 2765 df-v 3033 df-sbc 3256 df-csb 3350 df-dif 3393 df-un 3395 df-in 3397 df-ss 3404 df-nul 3723 df-if 3873 df-pw 3944 df-sn 3960 df-pr 3962 df-op 3966 df-uni 4191 df-br 4396 df-opab 4455 df-mpt 4456 df-id 4754 df-xp 4845 df-rel 4846 df-cnv 4847 df-co 4848 df-dm 4849 df-rn 4850 df-res 4851 df-ima 4852 df-iota 5553 df-fun 5591 df-fn 5592 df-f 5593 df-f1 5594 df-fo 5595 df-f1o 5596 df-fv 5597 df-er 7381 df-en 7588 df-dom 7589 df-sdom 7590 df-pnf 9695 df-mnf 9696 df-xneg 11432 |
This theorem is referenced by: xneg0 11528 xnegcl 11529 xnegneg 11530 xltnegi 11532 rexsub 11549 xnegid 11553 xnegdi 11559 xpncan 11562 xnpcan 11563 xmulneg1 11580 xmulm1 11592 xadddi 11606 xlt2addrd 28413 xrsmulgzz 28515 |
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