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| Mirrors > Home > MPE Home > Th. List > negneg1e1 | Structured version Visualization version GIF version | ||
| Description: --1 is 1. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| negneg1e1 | ⊢ --1 = 1 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11126 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | 1 | negnegi 11496 | 1 ⊢ --1 = 1 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1559 1c1 11069 -cneg 11410 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7712 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5540 df-po 5553 df-so 5554 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-iota 6471 df-fun 6517 df-fn 6518 df-f 6519 df-f1 6520 df-fo 6521 df-f1o 6522 df-fv 6523 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-er 8671 df-en 8922 df-dom 8923 df-sdom 8924 df-pnf 11213 df-mnf 11214 df-ltxr 11216 df-sub 11411 df-neg 11412 |
| This theorem is referenced by: m1expcl2 14093 absi 15294 sinhval 16167 coshval 16168 xrhmeo 24986 ncvspi 25196 cphipval2 25281 atandm2 26917 efiasin 26928 asinsinlem 26931 asin1 26934 nvpi 30814 ipasslem10 30986 hvaddsubval 31180 polid2i 31304 lnophmlem2 32164 dvasin 38156 difmodm1lt 47912 |
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